diff --git a/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/AbstractComplexIdentifiableSerDe.java b/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/AbstractComplexIdentifiableSerDe.java
index e723ae538b5..eb4991c2337 100644
--- a/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/AbstractComplexIdentifiableSerDe.java
+++ b/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/AbstractComplexIdentifiableSerDe.java
@@ -45,6 +45,27 @@ public final void read(P parent, NetworkDeserializerContext context) {
         String id = readIdentifierAttributes(adder, context);
         readRootElementAttributes(adder, toApply, context);
         readSubElements(id, adder, toApply, context);
+        if (postponeElementCreation()) {
+            context.getEndTasks().add(() -> createElement(adder, toApply));
+        } else {
+            createElement(adder, toApply);
+        }
+    }
+
+    /**
+     * <p>Should the current element's creation be postponed?</p>
+     * <p>In some specific cases, the element could not be created right after it is read, typically if it references
+     * other network elements which may have not been yet created. (It is better to create the element without the said
+     * references and to fill them in later, but it is not always possible, or at high cost.)
+     * If this method returns <code>true</code>, the element's creation will be defined as an "end task" and
+     * will be performed after the whole network is read.</p>
+     * @return <code>true</code> if the creation should be postponed, <code>false</code> otherwise.
+     */
+    protected boolean postponeElementCreation() {
+        return false;
+    }
+
+    private static <T extends Identifiable<T>, A extends IdentifiableAdder<T, A>> void createElement(A adder, List<Consumer<T>> toApply) {
         T identifiable = adder.add();
         toApply.forEach(consumer -> consumer.accept(identifiable));
     }
diff --git a/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/AbstractIdentifiableSerDe.java b/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/AbstractIdentifiableSerDe.java
index 40fe44da585..85043270f0b 100644
--- a/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/AbstractIdentifiableSerDe.java
+++ b/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/AbstractIdentifiableSerDe.java
@@ -56,11 +56,15 @@ public final void write(T identifiable, P parent, NetworkSerializerContext conte
     protected String readIdentifierAttributes(A adder, NetworkDeserializerContext context) {
         String id = context.getAnonymizer().deanonymizeString(context.getReader().readStringAttribute("id"));
         String name = context.getAnonymizer().deanonymizeString(context.getReader().readStringAttribute("name"));
-        adder.setId(id)
-                .setName(name);
+        if (adder != null) {
+            adder.setId(id)
+                    .setName(name);
+        }
         IidmSerDeUtil.runFromMinimumVersion(IidmVersion.V_1_2, context, () -> {
             boolean fictitious = context.getReader().readBooleanAttribute("fictitious", false);
-            adder.setFictitious(fictitious);
+            if (adder != null) {
+                adder.setFictitious(fictitious);
+            }
         });
         return id;
     }
diff --git a/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/AbstractTreeDataExporter.java b/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/AbstractTreeDataExporter.java
index 2f548775be4..5ea9d3fbfa8 100644
--- a/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/AbstractTreeDataExporter.java
+++ b/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/AbstractTreeDataExporter.java
@@ -89,6 +89,11 @@
  *         <td>version in which files will be generated</td>
  *         <td>1.5 or 1.4 etc</td>
  *     </tr>
+ *     <tr>
+ *         <td>iidm.export.xml.with-automation-systems</td>
+ *         <td>if true automation systems are exported</td>
+ *         <td>true or false</td>
+ *     </tr>
  * </table>
  *
  * @author Geoffroy Jamgotchian {@literal <geoffroy.jamgotchian at rte-france.com>}
@@ -109,6 +114,7 @@ public abstract class AbstractTreeDataExporter implements Exporter {
     public static final String EXTENSIONS_LIST = "iidm.export.xml.extensions";
     public static final String SORTED = "iidm.export.xml.sorted";
     public static final String VERSION = "iidm.export.xml.version";
+    public static final String WITH_AUTOMATION_SYSTEMS = "iidm.export.xml.with-automation-systems";
 
     private static final Parameter INDENT_PARAMETER = new Parameter(INDENT, ParameterType.BOOLEAN, "Indent export output file", Boolean.TRUE);
     private static final Parameter WITH_BRANCH_STATE_VARIABLES_PARAMETER = new Parameter(WITH_BRANCH_STATE_VARIABLES, ParameterType.BOOLEAN, "Export network with branch state variables", Boolean.TRUE);
@@ -126,11 +132,12 @@ public abstract class AbstractTreeDataExporter implements Exporter {
     private static final Parameter SORTED_PARAMETER = new Parameter(SORTED, ParameterType.BOOLEAN, "Sort export output file", Boolean.FALSE);
     private static final Parameter VERSION_PARAMETER = new Parameter(VERSION, ParameterType.STRING, "IIDM version in which files will be generated", IidmSerDeConstants.CURRENT_IIDM_VERSION.toString("."),
             Arrays.stream(IidmVersion.values()).map(v -> v.toString(".")).collect(Collectors.toList()));
-
+    private static final Parameter WITH_AUTOMATION_SYSTEMS_PARAMETER = new Parameter(WITH_AUTOMATION_SYSTEMS, ParameterType.BOOLEAN,
+            "Export network with automation systems", Boolean.TRUE);
     private static final List<Parameter> STATIC_PARAMETERS = List.of(INDENT_PARAMETER, WITH_BRANCH_STATE_VARIABLES_PARAMETER,
             ONLY_MAIN_CC_PARAMETER, ANONYMISED_PARAMETER, IIDM_VERSION_INCOMPATIBILITY_BEHAVIOR_PARAMETER,
             TOPOLOGY_LEVEL_PARAMETER, THROW_EXCEPTION_IF_EXTENSION_NOT_FOUND_PARAMETER, EXTENSIONS_LIST_PARAMETER,
-            SORTED_PARAMETER, VERSION_PARAMETER);
+            SORTED_PARAMETER, VERSION_PARAMETER, WITH_AUTOMATION_SYSTEMS_PARAMETER);
 
     private final ParameterDefaultValueConfig defaultValueConfig;
 
@@ -191,7 +198,8 @@ private ExportOptions createExportOptions(Properties parameters) {
                 .setExtensions(Parameter.readStringList(getFormat(), parameters, EXTENSIONS_LIST_PARAMETER, defaultValueConfig) != null ? new HashSet<>(Parameter.readStringList(getFormat(), parameters, EXTENSIONS_LIST_PARAMETER, defaultValueConfig)) : null)
                 .setSorted(Parameter.readBoolean(getFormat(), parameters, SORTED_PARAMETER, defaultValueConfig))
                 .setVersion(Parameter.readString(getFormat(), parameters, VERSION_PARAMETER, defaultValueConfig))
-                .setFormat(getTreeDataFormat());
+                .setFormat(getTreeDataFormat())
+                .setWithAutomationSystems(Parameter.readBoolean(getFormat(), parameters, WITH_AUTOMATION_SYSTEMS_PARAMETER, defaultValueConfig));
         addExtensionsVersions(parameters, options);
         return options;
     }
diff --git a/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/AbstractTreeDataImporter.java b/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/AbstractTreeDataImporter.java
index 2c850181ec6..caddb83a507 100644
--- a/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/AbstractTreeDataImporter.java
+++ b/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/AbstractTreeDataImporter.java
@@ -50,6 +50,8 @@ public abstract class AbstractTreeDataImporter implements Importer {
 
     public static final String EXTENSIONS_LIST = "iidm.import.xml.extensions";
 
+    public static final String WITH_AUTOMATION_SYSTEMS = "iidm.import.xml.with-automation-systems";
+
     private static final Parameter THROW_EXCEPTION_IF_EXTENSION_NOT_FOUND_PARAMETER
             = new Parameter(THROW_EXCEPTION_IF_EXTENSION_NOT_FOUND, ParameterType.BOOLEAN, "Throw exception if extension not found", Boolean.FALSE)
             .addAdditionalNames("throwExceptionIfExtensionNotFound");
@@ -58,6 +60,9 @@ public abstract class AbstractTreeDataImporter implements Importer {
             = new Parameter(EXTENSIONS_LIST, ParameterType.STRING_LIST, "The list of extension files ", null,
             EXTENSIONS_SUPPLIER.get().getProviders().stream().map(ExtensionProvider::getExtensionName).collect(Collectors.toList()));
 
+    private static final Parameter WITH_AUTOMATION_SYSTEMS_PARAMETER = new Parameter(WITH_AUTOMATION_SYSTEMS, ParameterType.BOOLEAN,
+            "Import network with automation systems", Boolean.TRUE);
+
     private final ParameterDefaultValueConfig defaultValueConfig;
 
     static final String SUFFIX_MAPPING = "_mapping";
@@ -72,7 +77,7 @@ protected AbstractTreeDataImporter(PlatformConfig platformConfig) {
 
     @Override
     public List<Parameter> getParameters() {
-        return List.of(THROW_EXCEPTION_IF_EXTENSION_NOT_FOUND_PARAMETER, EXTENSIONS_LIST_PARAMETER);
+        return List.of(THROW_EXCEPTION_IF_EXTENSION_NOT_FOUND_PARAMETER, EXTENSIONS_LIST_PARAMETER, WITH_AUTOMATION_SYSTEMS_PARAMETER);
     }
 
     private String findExtension(ReadOnlyDataSource dataSource) throws IOException {
@@ -150,7 +155,8 @@ public Network importData(ReadOnlyDataSource dataSource, NetworkFactory networkF
     protected ImportOptions createImportOptions(Properties parameters) {
         return new ImportOptions()
                 .setThrowExceptionIfExtensionNotFound(Parameter.readBoolean(getFormat(), parameters, THROW_EXCEPTION_IF_EXTENSION_NOT_FOUND_PARAMETER, defaultValueConfig))
-                .setExtensions(Parameter.readStringList(getFormat(), parameters, EXTENSIONS_LIST_PARAMETER, defaultValueConfig) != null ? new HashSet<>(Parameter.readStringList(getFormat(), parameters, EXTENSIONS_LIST_PARAMETER, defaultValueConfig)) : null);
+                .setExtensions(Parameter.readStringList(getFormat(), parameters, EXTENSIONS_LIST_PARAMETER, defaultValueConfig) != null ? new HashSet<>(Parameter.readStringList(getFormat(), parameters, EXTENSIONS_LIST_PARAMETER, defaultValueConfig)) : null)
+                .setWithAutomationSystems(Parameter.readBoolean(getFormat(), parameters, WITH_AUTOMATION_SYSTEMS_PARAMETER, defaultValueConfig));
     }
 }
 
diff --git a/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/ExportOptions.java b/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/ExportOptions.java
index e2bdc644516..fb1e8eb27c6 100644
--- a/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/ExportOptions.java
+++ b/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/ExportOptions.java
@@ -62,6 +62,8 @@ public enum IidmVersionIncompatibilityBehavior {
      */
     private boolean sorted = false;
 
+    private boolean withAutomationSystems = true;
+
     public ExportOptions() {
     }
 
@@ -233,4 +235,13 @@ public ExportOptions setSorted(boolean sorted) {
         this.sorted = sorted;
         return this;
     }
+
+    public boolean isWithAutomationSystems() {
+        return withAutomationSystems;
+    }
+
+    public ExportOptions setWithAutomationSystems(boolean withAutomationSystems) {
+        this.withAutomationSystems = withAutomationSystems;
+        return this;
+    }
 }
diff --git a/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/ImportOptions.java b/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/ImportOptions.java
index 0f9901dffc6..a701c8451ee 100644
--- a/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/ImportOptions.java
+++ b/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/ImportOptions.java
@@ -17,6 +17,7 @@
 public class ImportOptions extends AbstractOptions<ImportOptions> {
 
     private boolean throwExceptionIfExtensionNotFound = false;
+    private boolean withAutomationSystems = true;
 
     public ImportOptions() {
     }
@@ -50,4 +51,13 @@ public ImportOptions addExtension(String extension) {
     public boolean isThrowExceptionIfExtensionNotFound() {
         return throwExceptionIfExtensionNotFound;
     }
+
+    public boolean isWithAutomationSystems() {
+        return withAutomationSystems;
+    }
+
+    public ImportOptions setWithAutomationSystems(boolean withAutomationSystems) {
+        this.withAutomationSystems = withAutomationSystems;
+        return this;
+    }
 }
diff --git a/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/NetworkSerDe.java b/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/NetworkSerDe.java
index 5debecd41b4..1db679a68c7 100644
--- a/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/NetworkSerDe.java
+++ b/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/NetworkSerDe.java
@@ -553,6 +553,7 @@ private static BiMap<String, String> createArrayNameSingleNameBiMap(boolean with
                 Map.entry(LineSerDe.ARRAY_ELEMENT_NAME, LineSerDe.ROOT_ELEMENT_NAME),
                 Map.entry(LoadSerDe.ARRAY_ELEMENT_NAME, LoadSerDe.ROOT_ELEMENT_NAME),
                 Map.entry(NodeBreakerViewInternalConnectionSerDe.ARRAY_ELEMENT_NAME, NodeBreakerViewInternalConnectionSerDe.ROOT_ELEMENT_NAME),
+                Map.entry(OverloadManagementSystemSerDe.ARRAY_ELEMENT_NAME, OverloadManagementSystemSerDe.ROOT_ELEMENT_NAME),
                 Map.entry(PropertiesSerDe.ARRAY_ELEMENT_NAME, PropertiesSerDe.ROOT_ELEMENT_NAME),
                 Map.entry(ReactiveLimitsSerDe.POINT_ARRAY_ELEMENT_NAME, ReactiveLimitsSerDe.POINT_ROOT_ELEMENT_NAME),
                 Map.entry(ShuntSerDe.ARRAY_ELEMENT_NAME, ShuntSerDe.ROOT_ELEMENT_NAME),
diff --git a/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/OverloadManagementSystemSerDe.java b/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/OverloadManagementSystemSerDe.java
new file mode 100644
index 00000000000..d5824bf83a9
--- /dev/null
+++ b/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/OverloadManagementSystemSerDe.java
@@ -0,0 +1,197 @@
+/**
+ * Copyright (c) 2024, RTE (http://www.rte-france.com)
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ * SPDX-License-Identifier: MPL-2.0
+ */
+package com.powsybl.iidm.serde;
+
+import com.powsybl.commons.PowsyblException;
+import com.powsybl.iidm.network.*;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.function.Consumer;
+
+/**
+ * @author Olivier Perrin {@literal <olivier.perrin at rte-france.com>}
+ */
+class OverloadManagementSystemSerDe extends AbstractComplexIdentifiableSerDe<OverloadManagementSystem, OverloadManagementSystemAdder, Substation> {
+
+    static final OverloadManagementSystemSerDe INSTANCE = new OverloadManagementSystemSerDe();
+
+    static final String ROOT_ELEMENT_NAME = "overloadManagementSystem";
+    static final String ARRAY_ELEMENT_NAME = "overloadManagementSystems";
+
+    private static final String BRANCH_TRIPPING_TAG = "branchTripping";
+    private static final String SWITCH_TRIPPING_TAG = "switchTripping";
+    private static final String THREE_WINDINGS_TRANSFORMER_TRIPPING_TAG = "threeWindingsTransformerTripping";
+
+    @Override
+    protected String getRootElementName() {
+        return ROOT_ELEMENT_NAME;
+    }
+
+    @Override
+    protected void writeRootElementAttributes(OverloadManagementSystem oms, Substation substation, NetworkSerializerContext context) {
+        context.getWriter().writeBooleanAttribute("enabled", oms.isEnabled());
+        context.getWriter().writeStringAttribute("monitoredElementId", context.getAnonymizer().anonymizeString(oms.getMonitoredElementId()));
+        context.getWriter().writeStringAttribute("side", oms.getMonitoredSide().name());
+    }
+
+    @Override
+    protected void writeSubElements(OverloadManagementSystem oms, Substation substation, NetworkSerializerContext context) {
+        oms.getTrippings().forEach(t -> writeTripping(t, context));
+    }
+
+    private void writeTripping(OverloadManagementSystem.Tripping tripping, NetworkSerializerContext context) {
+        switch (tripping.getType()) {
+            case BRANCH_TRIPPING -> {
+                OverloadManagementSystem.BranchTripping branchTripping = (OverloadManagementSystem.BranchTripping) tripping;
+                context.getWriter().writeStartNode(context.getVersion().getNamespaceURI(context.isValid()), BRANCH_TRIPPING_TAG);
+                writeTrippingCommonAttributes(tripping, context);
+                context.getWriter().writeStringAttribute("branchId",
+                        context.getAnonymizer().anonymizeString(branchTripping.getBranchToOperateId()));
+                context.getWriter().writeStringAttribute("side", branchTripping.getSideToOperate().name());
+                context.getWriter().writeEndNode();
+            }
+            case SWITCH_TRIPPING -> {
+                OverloadManagementSystem.SwitchTripping switchTripping = (OverloadManagementSystem.SwitchTripping) tripping;
+                context.getWriter().writeStartNode(context.getVersion().getNamespaceURI(context.isValid()), SWITCH_TRIPPING_TAG);
+                writeTrippingCommonAttributes(tripping, context);
+                context.getWriter().writeStringAttribute("switchId",
+                        context.getAnonymizer().anonymizeString(switchTripping.getSwitchToOperateId()));
+                context.getWriter().writeEndNode();
+            }
+            case THREE_WINDINGS_TRANSFORMER_TRIPPING -> {
+                OverloadManagementSystem.ThreeWindingsTransformerTripping twtTripping =
+                        (OverloadManagementSystem.ThreeWindingsTransformerTripping) tripping;
+                context.getWriter().writeStartNode(context.getVersion().getNamespaceURI(context.isValid()), THREE_WINDINGS_TRANSFORMER_TRIPPING_TAG);
+                writeTrippingCommonAttributes(tripping, context);
+                context.getWriter().writeStringAttribute("threeWindingsTransformerId",
+                        context.getAnonymizer().anonymizeString(twtTripping.getThreeWindingsTransformerToOperateId()));
+                context.getWriter().writeStringAttribute("side", twtTripping.getSideToOperate().name());
+                context.getWriter().writeEndNode();
+            }
+            default -> throw new PowsyblException("Unexpected tripping type: " + tripping.getType());
+        }
+    }
+
+    private void writeTrippingCommonAttributes(OverloadManagementSystem.Tripping tripping, NetworkSerializerContext context) {
+        context.getWriter().writeStringAttribute("key", tripping.getKey());
+        String nameOrKey = tripping.getNameOrKey();
+        if (nameOrKey != null && !nameOrKey.equals(tripping.getKey())) {
+            context.getWriter().writeStringAttribute("name", nameOrKey);
+        }
+        context.getWriter().writeDoubleAttribute("currentLimit", tripping.getCurrentLimit());
+        context.getWriter().writeBooleanAttribute("openAction", tripping.isOpenAction());
+    }
+
+    @Override
+    protected OverloadManagementSystemAdder createAdder(Substation s) {
+        return s.newOverloadManagementSystem();
+    }
+
+    @Override
+    protected void readRootElementAttributes(OverloadManagementSystemAdder adder,
+                                             List<Consumer<OverloadManagementSystem>> toApply,
+                                             NetworkDeserializerContext context) {
+        boolean enabled = context.getReader().readBooleanAttribute("enabled", true);
+        String monitoredElementId = context.getAnonymizer().deanonymizeString(context.getReader().readStringAttribute("monitoredElementId"));
+        String side = context.getReader().readStringAttribute("side");
+        ThreeSides monitoredSide = side == null ? ThreeSides.ONE : ThreeSides.valueOf(side);
+        if (adder != null) {
+            adder.setEnabled(enabled)
+                    .setMonitoredElementId(monitoredElementId)
+                    .setMonitoredElementSide(monitoredSide);
+        }
+    }
+
+    @Override
+    protected void readSubElements(String id, OverloadManagementSystemAdder adder,
+                                   List<Consumer<OverloadManagementSystem>> toApply,
+                                   NetworkDeserializerContext context) {
+        context.getReader().readChildNodes(elementName -> {
+            String key = context.getReader().readStringAttribute("key");
+            String name = context.getReader().readStringAttribute("name");
+            double currentLimit = context.getReader().readDoubleAttribute("currentLimit");
+            boolean openAction = context.getReader().readBooleanAttribute("openAction");
+
+            switch (elementName) {
+                case BRANCH_TRIPPING_TAG -> readBranchTripping(adder, context, key, name, currentLimit, openAction);
+                case SWITCH_TRIPPING_TAG -> readSwitchTripping(adder, context, key, name, currentLimit, openAction);
+                case THREE_WINDINGS_TRANSFORMER_TRIPPING_TAG -> readThreeWindingsTransformerTripping(adder, context, key, name, currentLimit, openAction);
+                default -> readSubElement(elementName, id, toApply, context);
+            }
+        });
+    }
+
+    private static void readBranchTripping(OverloadManagementSystemAdder adder, NetworkDeserializerContext context,
+                                           String key, String name, double currentLimit, boolean openAction) {
+        String branchId = context.getAnonymizer().deanonymizeString(context.getReader().readStringAttribute("branchId"));
+        String side = context.getReader().readStringAttribute("side");
+        TwoSides sideToOperate = side == null ? TwoSides.ONE : TwoSides.valueOf(side);
+        context.getReader().readEndNode();
+        if (adder != null) {
+            adder.newBranchTripping()
+                    .setKey(key)
+                    .setName(name)
+                    .setCurrentLimit(currentLimit)
+                    .setOpenAction(openAction)
+                    .setBranchToOperateId(branchId)
+                    .setSideToOperate(sideToOperate)
+                    .add();
+        }
+    }
+
+    private static void readSwitchTripping(OverloadManagementSystemAdder adder, NetworkDeserializerContext context,
+                                           String key, String name, double currentLimit, boolean openAction) {
+        String switchId = context.getAnonymizer().deanonymizeString(context.getReader().readStringAttribute("switchId"));
+        context.getReader().readEndNode();
+        if (adder != null) {
+            adder.newSwitchTripping()
+                    .setKey(key)
+                    .setName(name)
+                    .setCurrentLimit(currentLimit)
+                    .setOpenAction(openAction)
+                    .setSwitchToOperateId(switchId)
+                    .add();
+        }
+    }
+
+    private static void readThreeWindingsTransformerTripping(OverloadManagementSystemAdder adder, NetworkDeserializerContext context,
+                                                             String key, String name, double currentLimit, boolean openAction) {
+        String twtId = context.getAnonymizer().deanonymizeString(
+                context.getReader().readStringAttribute("threeWindingsTransformerId"));
+        String side = context.getReader().readStringAttribute("side");
+        ThreeSides sideToOperate = side == null ? ThreeSides.ONE : ThreeSides.valueOf(side);
+        context.getReader().readEndNode();
+        if (adder != null) {
+            adder.newThreeWindingsTransformerTripping()
+                    .setKey(key)
+                    .setName(name)
+                    .setCurrentLimit(currentLimit)
+                    .setOpenAction(openAction)
+                    .setThreeWindingsTransformerToOperateId(twtId)
+                    .setSideToOperate(sideToOperate)
+                    .add();
+        }
+    }
+
+    @Override
+    protected boolean postponeElementCreation() {
+        // OverloadManagementSystems may reference other elements which are not in the same substation (for instance lines).
+        // In that case, there's no guarantee that the other elements were previously read when deserializing the network.
+        // This could lead to errors at the OverloadManagementSystem's creation.
+        // To avoid this, this latter is postponed.
+        return true;
+    }
+
+    public final void skip(NetworkDeserializerContext context) {
+        List<Consumer<OverloadManagementSystem>> toApply = new ArrayList<>();
+        String id = readIdentifierAttributes(null, context);
+        readRootElementAttributes(null, toApply, context);
+        readSubElements(id, null, toApply, context);
+    }
+}
diff --git a/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/SubstationSerDe.java b/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/SubstationSerDe.java
index c23a9565b0c..e70034b8999 100644
--- a/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/SubstationSerDe.java
+++ b/iidm/iidm-serde/src/main/java/com/powsybl/iidm/serde/SubstationSerDe.java
@@ -8,7 +8,10 @@
 
 import com.powsybl.iidm.network.*;
 import com.powsybl.iidm.serde.util.IidmSerDeUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
+import java.util.Collection;
 import java.util.Optional;
 
 /**
@@ -17,6 +20,8 @@
  */
 class SubstationSerDe extends AbstractSimpleIdentifiableSerDe<Substation, SubstationAdder, Network> {
 
+    private static final Logger LOGGER = LoggerFactory.getLogger(SubstationSerDe.class);
+
     static final SubstationSerDe INSTANCE = new SubstationSerDe();
 
     static final String ROOT_ELEMENT_NAME = "substation";
@@ -43,12 +48,21 @@ protected void writeRootElementAttributes(Substation s, Network n, NetworkSerial
 
     @Override
     protected void writeSubElements(Substation s, Network n, NetworkSerializerContext context) {
+        writeVoltageLevels(s, context);
+        writeTwoWindingsTransformers(s, context);
+        writeThreeWindingsTransformers(s, context);
+        writeOverloadManagementSystems(s, context);
+    }
+
+    private static void writeVoltageLevels(Substation s, NetworkSerializerContext context) {
         context.getWriter().writeStartNodes();
         for (VoltageLevel vl : IidmSerDeUtil.sorted(s.getVoltageLevels(), context.getOptions())) {
             VoltageLevelSerDe.INSTANCE.write(vl, null, context);
         }
         context.getWriter().writeEndNodes();
+    }
 
+    private static void writeTwoWindingsTransformers(Substation s, NetworkSerializerContext context) {
         context.getWriter().writeStartNodes();
         Iterable<TwoWindingsTransformer> twts = IidmSerDeUtil.sorted(s.getTwoWindingsTransformers(), context.getOptions());
         for (TwoWindingsTransformer twt : twts) {
@@ -58,10 +72,12 @@ protected void writeSubElements(Substation s, Network n, NetworkSerializerContex
             TwoWindingsTransformerSerDe.INSTANCE.write(twt, null, context);
         }
         context.getWriter().writeEndNodes();
+    }
 
+    private static void writeThreeWindingsTransformers(Substation s, NetworkSerializerContext context) {
         context.getWriter().writeStartNodes();
-        Iterable<ThreeWindingsTransformer> twts2 = IidmSerDeUtil.sorted(s.getThreeWindingsTransformers(), context.getOptions());
-        for (ThreeWindingsTransformer twt : twts2) {
+        Iterable<ThreeWindingsTransformer> twts = IidmSerDeUtil.sorted(s.getThreeWindingsTransformers(), context.getOptions());
+        for (ThreeWindingsTransformer twt : twts) {
             if (!context.getFilter().test(twt)) {
                 continue;
             }
@@ -70,6 +86,60 @@ protected void writeSubElements(Substation s, Network n, NetworkSerializerContex
         context.getWriter().writeEndNodes();
     }
 
+    private static void writeOverloadManagementSystems(Substation s, NetworkSerializerContext context) {
+        if (!context.getOptions().isWithAutomationSystems()) {
+            return;
+        }
+        IidmSerDeUtil.runFromMinimumVersion(IidmVersion.V_1_12, context, () -> {
+            Collection<OverloadManagementSystem> validOverloadManagementSystems = filterValidOverloadManagementSystems(s);
+            if (!validOverloadManagementSystems.isEmpty()) {
+                context.getWriter().writeStartNodes();
+                IidmSerDeUtil.sorted(validOverloadManagementSystems, context.getOptions())
+                        .forEach(oms -> OverloadManagementSystemSerDe.INSTANCE.write(oms, null, context));
+                context.getWriter().writeEndNodes();
+            }
+        });
+    }
+
+    private static Collection<OverloadManagementSystem> filterValidOverloadManagementSystems(Substation s) {
+        Network n = s.getNetwork();
+        return s.getOverloadManagementSystemStream().filter(o -> {
+            if (n.getIdentifiable(o.getMonitoredElementId()) == null) {
+                LOGGER.warn(String.format("Discard overload management system '%s': monitored element '%s' is unknown.",
+                        o.getNameOrId(), o.getMonitoredElementId()));
+                return false;
+            }
+            for (OverloadManagementSystem.Tripping tripping : o.getTrippings()) {
+                Identifiable<?> element = null;
+                String id = "";
+                String type = "";
+                switch (tripping.getType()) {
+                    case BRANCH_TRIPPING -> {
+                        type = "branch";
+                        id = ((OverloadManagementSystem.BranchTripping) tripping).getBranchToOperateId();
+                        element = n.getBranch(id);
+                    }
+                    case SWITCH_TRIPPING -> {
+                        type = "switch";
+                        id = ((OverloadManagementSystem.SwitchTripping) tripping).getSwitchToOperateId();
+                        element = n.getSwitch(id);
+                    }
+                    case THREE_WINDINGS_TRANSFORMER_TRIPPING -> {
+                        type = "three windings transformer";
+                        id = ((OverloadManagementSystem.ThreeWindingsTransformerTripping) tripping).getThreeWindingsTransformerToOperateId();
+                        element = n.getThreeWindingsTransformer(id);
+                    }
+                }
+                if (element == null) {
+                    LOGGER.warn(String.format("Discard overload management system '%s': invalid %s tripping. '%s' is unknown.",
+                            o.getNameOrId(), type, id));
+                    return false;
+                }
+            }
+            return true;
+        }).toList();
+    }
+
     @Override
     protected SubstationAdder createAdder(Network network) {
         return network.newSubstation();
@@ -97,8 +167,19 @@ protected void readSubElements(Substation s, NetworkDeserializerContext context)
                 case VoltageLevelSerDe.ROOT_ELEMENT_NAME -> VoltageLevelSerDe.INSTANCE.read(s, context);
                 case TwoWindingsTransformerSerDe.ROOT_ELEMENT_NAME -> TwoWindingsTransformerSerDe.INSTANCE.read(s, context);
                 case ThreeWindingsTransformerSerDe.ROOT_ELEMENT_NAME -> ThreeWindingsTransformerSerDe.INSTANCE.read(s, context);
+                case OverloadManagementSystemSerDe.ROOT_ELEMENT_NAME -> checkSupportedAndReadOverloadManagementSystems(s, context);
                 default -> readSubElement(elementName, s, context);
             }
         });
     }
+
+    private static void checkSupportedAndReadOverloadManagementSystems(Substation s, NetworkDeserializerContext context) {
+        IidmSerDeUtil.assertMinimumVersion(ROOT_ELEMENT_NAME, OverloadManagementSystemSerDe.ROOT_ELEMENT_NAME,
+                IidmSerDeUtil.ErrorMessage.NOT_SUPPORTED, IidmVersion.V_1_12, context);
+        if (context.getOptions().isWithAutomationSystems()) {
+            OverloadManagementSystemSerDe.INSTANCE.read(s, context);
+        } else {
+            OverloadManagementSystemSerDe.INSTANCE.skip(context);
+        }
+    }
 }
diff --git a/iidm/iidm-serde/src/main/resources/xsd/iidm_V1_12.xsd b/iidm/iidm-serde/src/main/resources/xsd/iidm_V1_12.xsd
index 91a8ad187f1..c11d28a6b77 100644
--- a/iidm/iidm-serde/src/main/resources/xsd/iidm_V1_12.xsd
+++ b/iidm/iidm-serde/src/main/resources/xsd/iidm_V1_12.xsd
@@ -78,6 +78,7 @@
                     <xs:choice minOccurs="0" maxOccurs="unbounded">
                         <xs:element name="twoWindingsTransformer" type="iidm:TwoWindingsTransformer" />
                         <xs:element name="threeWindingsTransformer" type="iidm:ThreeWindingsTransformer" />
+                        <xs:element name="overloadManagementSystem" type="iidm:OverloadManagementSystem" />
                     </xs:choice>
                 </xs:sequence>
                 <xs:attribute name="tso" use="optional" type="iidm:nonEmptyString"/>
@@ -499,6 +500,49 @@
             </xs:extension>
         </xs:complexContent>
     </xs:complexType>
+    <xs:complexType name="OverloadManagementSystem">
+        <xs:complexContent>
+            <xs:extension base="iidm:Identifiable">
+                <xs:choice minOccurs="0" maxOccurs="unbounded">
+                    <xs:element name="branchTripping" type="iidm:BranchTripping"/>
+                    <xs:element name="switchTripping" type="iidm:SwitchTripping"/>
+                    <xs:element name="threeWindingsTransformerTripping" type="iidm:ThreeWindingsTransformerTripping"/>
+                </xs:choice>
+                <xs:attribute name="enabled" use="optional" type="xs:boolean"/>
+                <xs:attribute name="monitoredElementId" use="required" type="iidm:nonEmptyString"/>
+                <xs:attribute name="side" use="optional" type="iidm:Side"/>
+            </xs:extension>
+        </xs:complexContent>
+    </xs:complexType>
+    <xs:complexType name="Tripping">
+        <xs:attribute name="key" use="required" type="iidm:nonEmptyString"/>
+        <xs:attribute name="name" use="optional" type="iidm:nonEmptyString"/>
+        <xs:attribute name="currentLimit" use="required" type="xs:double"/>
+        <xs:attribute name="openAction" use="required" type="xs:boolean"/>
+    </xs:complexType>
+    <xs:complexType name="BranchTripping">
+        <xs:complexContent>
+            <xs:extension base="iidm:Tripping">
+                <xs:attribute name="branchId" use="required" type="iidm:nonEmptyString"/>
+                <xs:attribute name="side" use="optional" type="iidm:Side"/>
+            </xs:extension>
+        </xs:complexContent>
+    </xs:complexType>
+    <xs:complexType name="SwitchTripping">
+        <xs:complexContent>
+            <xs:extension base="iidm:Tripping">
+                <xs:attribute name="switchId" use="required" type="iidm:nonEmptyString"/>
+            </xs:extension>
+        </xs:complexContent>
+    </xs:complexType>
+    <xs:complexType name="ThreeWindingsTransformerTripping">
+        <xs:complexContent>
+            <xs:extension base="iidm:Tripping">
+                <xs:attribute name="threeWindingsTransformerId" use="required" type="iidm:nonEmptyString"/>
+                <xs:attribute name="side" use="optional" type="iidm:Side"/>
+            </xs:extension>
+        </xs:complexContent>
+    </xs:complexType>
     <xs:simpleType name="Side">
         <xs:restriction base="xs:string">
             <xs:enumeration value="ONE"/>
diff --git a/iidm/iidm-serde/src/main/resources/xsd/iidm_equipment_V1_12.xsd b/iidm/iidm-serde/src/main/resources/xsd/iidm_equipment_V1_12.xsd
index e3ae492b20f..c3541f1971f 100644
--- a/iidm/iidm-serde/src/main/resources/xsd/iidm_equipment_V1_12.xsd
+++ b/iidm/iidm-serde/src/main/resources/xsd/iidm_equipment_V1_12.xsd
@@ -77,6 +77,7 @@
                     <xs:choice minOccurs="0" maxOccurs="unbounded">
                         <xs:element name="twoWindingsTransformer" type="iidm:TwoWindingsTransformer" />
                         <xs:element name="threeWindingsTransformer" type="iidm:ThreeWindingsTransformer" />
+                        <xs:element name="overloadManagementSystem" type="iidm:OverloadManagementSystem" />
                     </xs:choice>
                 </xs:sequence>
                 <xs:attribute name="tso" use="optional" type="iidm:nonEmptyString"/>
@@ -495,6 +496,49 @@
             </xs:extension>
         </xs:complexContent>
     </xs:complexType>
+    <xs:complexType name="OverloadManagementSystem">
+        <xs:complexContent>
+            <xs:extension base="iidm:Identifiable">
+                <xs:choice minOccurs="0" maxOccurs="unbounded">
+                    <xs:element name="branchTripping" type="iidm:BranchTripping"/>
+                    <xs:element name="switchTripping" type="iidm:SwitchTripping"/>
+                    <xs:element name="threeWindingsTransformerTripping" type="iidm:ThreeWindingsTransformerTripping"/>
+                </xs:choice>
+                <xs:attribute name="enabled" use="optional" type="xs:boolean"/>
+                <xs:attribute name="monitoredElementId" use="required" type="iidm:nonEmptyString"/>
+                <xs:attribute name="side" use="optional" type="iidm:Side"/>
+            </xs:extension>
+        </xs:complexContent>
+    </xs:complexType>
+    <xs:complexType name="Tripping">
+        <xs:attribute name="key" use="required" type="iidm:nonEmptyString"/>
+        <xs:attribute name="name" use="optional" type="iidm:nonEmptyString"/>
+        <xs:attribute name="currentLimit" use="required" type="xs:double"/>
+        <xs:attribute name="openAction" use="required" type="xs:boolean"/>
+    </xs:complexType>
+    <xs:complexType name="BranchTripping">
+        <xs:complexContent>
+            <xs:extension base="iidm:Tripping">
+                <xs:attribute name="branchId" use="required" type="iidm:nonEmptyString"/>
+                <xs:attribute name="side" use="optional" type="iidm:Side"/>
+            </xs:extension>
+        </xs:complexContent>
+    </xs:complexType>
+    <xs:complexType name="SwitchTripping">
+        <xs:complexContent>
+            <xs:extension base="iidm:Tripping">
+                <xs:attribute name="switchId" use="required" type="iidm:nonEmptyString"/>
+            </xs:extension>
+        </xs:complexContent>
+    </xs:complexType>
+    <xs:complexType name="ThreeWindingsTransformerTripping">
+        <xs:complexContent>
+            <xs:extension base="iidm:Tripping">
+                <xs:attribute name="threeWindingsTransformerId" use="required" type="iidm:nonEmptyString"/>
+                <xs:attribute name="side" use="optional" type="iidm:Side"/>
+            </xs:extension>
+        </xs:complexContent>
+    </xs:complexType>
     <xs:simpleType name="Side">
         <xs:restriction base="xs:string">
             <xs:enumeration value="ONE"/>
diff --git a/iidm/iidm-serde/src/test/java/com/powsybl/iidm/serde/AbstractIidmSerDeTest.java b/iidm/iidm-serde/src/test/java/com/powsybl/iidm/serde/AbstractIidmSerDeTest.java
index eb2bbe45099..169a85e4316 100644
--- a/iidm/iidm-serde/src/test/java/com/powsybl/iidm/serde/AbstractIidmSerDeTest.java
+++ b/iidm/iidm-serde/src/test/java/com/powsybl/iidm/serde/AbstractIidmSerDeTest.java
@@ -128,6 +128,15 @@ protected void testForAllPreviousVersions(IidmVersion maxVersion, Consumer<IidmV
                 .forEach(test);
     }
 
+    /**
+     * Execute a given test for all IIDM versions newer or equal than a given minimum IIDM version.
+     */
+    protected void testForAllVersionsSince(IidmVersion minVersion, Consumer<IidmVersion> test) {
+        Stream.of(IidmVersion.values())
+                .filter(v -> v.compareTo(minVersion) >= 0)
+                .forEach(test);
+    }
+
     /**
      * Execute a write test for the given network, for all IIDM versions strictly older than a given maximum IIDM
      * version, and compare to the given versioned xml reference test resource.
@@ -190,6 +199,7 @@ public Network allFormatsRoundTripTest(Network network, String refXmlFile) throw
      * </ul>
      * @param network the network to start with
      * @param filename the filename of the reference versioned file resource
+     * @param version the version to use for exporting and for the versioned filename
      * @return the Network read just before the end of the round trip
      */
     public Network allFormatsRoundTripTest(Network network, String filename, IidmVersion version) throws IOException {
diff --git a/iidm/iidm-serde/src/test/java/com/powsybl/iidm/serde/ExportOptionsTest.java b/iidm/iidm-serde/src/test/java/com/powsybl/iidm/serde/ExportOptionsTest.java
index 23e85658b1c..f9c0a7df577 100644
--- a/iidm/iidm-serde/src/test/java/com/powsybl/iidm/serde/ExportOptionsTest.java
+++ b/iidm/iidm-serde/src/test/java/com/powsybl/iidm/serde/ExportOptionsTest.java
@@ -46,8 +46,10 @@ void exportOptionsTest2() {
         ExportOptions options = new ExportOptions();
         options.setCharset(StandardCharsets.ISO_8859_1);
         options.setExtensions(extensionsList);
+        options.setWithAutomationSystems(false);
         assertEquals(0, (int) options.getExtensions().map(Set::size).orElse(-1));
         assertEquals(StandardCharsets.ISO_8859_1, options.getCharset());
+        assertFalse(options.isWithAutomationSystems());
     }
 
     @Test
@@ -85,5 +87,6 @@ private void testDefaultExportOptions(ExportOptions options) {
         assertEquals(IidmSerDeConstants.CURRENT_IIDM_VERSION, options.getVersion());
         assertEquals(THROW_EXCEPTION, options.getIidmVersionIncompatibilityBehavior());
         assertEquals(StandardCharsets.UTF_8, options.getCharset());
+        assertEquals(Boolean.TRUE, options.isWithAutomationSystems());
     }
 }
diff --git a/iidm/iidm-serde/src/test/java/com/powsybl/iidm/serde/ImportOptionsTest.java b/iidm/iidm-serde/src/test/java/com/powsybl/iidm/serde/ImportOptionsTest.java
index f39ca4e68f4..0a84c6e2943 100644
--- a/iidm/iidm-serde/src/test/java/com/powsybl/iidm/serde/ImportOptionsTest.java
+++ b/iidm/iidm-serde/src/test/java/com/powsybl/iidm/serde/ImportOptionsTest.java
@@ -23,7 +23,9 @@ void importOptionsTest() {
         ImportOptions options = new ImportOptions();
         Set<String> extensionsList = Sets.newHashSet("loadFoo", "loadBar");
         options.setExtensions(extensionsList);
+        options.setWithAutomationSystems(false);
         assertEquals(Boolean.FALSE, options.withNoExtension());
+        assertEquals(Boolean.FALSE, options.isWithAutomationSystems());
 
         options.addExtension("loadBar");
         assertEquals(2, (int) options.getExtensions().map(Set::size).orElse(-1));
@@ -48,5 +50,6 @@ void importOptionsDefaultValues() {
         assertEquals(Boolean.FALSE, options.withNoExtension());
         assertEquals(-1, (int) options.getExtensions().map(Set::size).orElse(-1));
         assertEquals(Boolean.TRUE, options.withAllExtensions());
+        assertEquals(Boolean.TRUE, options.isWithAutomationSystems());
     }
 }
diff --git a/iidm/iidm-serde/src/test/java/com/powsybl/iidm/serde/OverloadManagementSystemSerDeTest.java b/iidm/iidm-serde/src/test/java/com/powsybl/iidm/serde/OverloadManagementSystemSerDeTest.java
new file mode 100644
index 00000000000..325cfff4321
--- /dev/null
+++ b/iidm/iidm-serde/src/test/java/com/powsybl/iidm/serde/OverloadManagementSystemSerDeTest.java
@@ -0,0 +1,338 @@
+/**
+ * Copyright (c) 2024, RTE (http://www.rte-france.com)
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ * SPDX-License-Identifier: MPL-2.0
+ */
+package com.powsybl.iidm.serde;
+
+import com.powsybl.commons.io.TreeDataFormat;
+import com.powsybl.iidm.network.*;
+import com.powsybl.iidm.serde.anonymizer.Anonymizer;
+import org.apache.commons.io.IOUtils;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+
+import java.io.*;
+import java.nio.charset.StandardCharsets;
+import java.time.ZonedDateTime;
+import java.util.stream.Stream;
+
+import static com.powsybl.iidm.serde.IidmSerDeConstants.CURRENT_IIDM_VERSION;
+
+/**
+ * @author Olivier Perrin {@literal <olivier.perrin at rte-france.com>}
+ */
+class OverloadManagementSystemSerDeTest extends AbstractIidmSerDeTest {
+
+    private static Network network;
+
+    @BeforeAll
+    public static void setup() {
+        network = createNetwork();
+    }
+
+    @Test
+    void roundTripTest() throws IOException {
+        // backward compatibility
+        allFormatsRoundTripAllPreviousVersionedXmlTest("overloadManagementSystemRoundTripRef.xml");
+        allFormatsRoundTripTest(network, "overloadManagementSystemRoundTripRef.xml", CURRENT_IIDM_VERSION);
+    }
+
+    private record ExportResult(Anonymizer anonymizer, String content) {
+    }
+
+    static Stream<Arguments> provideFormats() {
+        return Stream.of(
+                Arguments.of(TreeDataFormat.JSON),
+                Arguments.of(TreeDataFormat.XML)
+        );
+    }
+
+    @ParameterizedTest
+    @MethodSource("provideFormats")
+    void exportDisabledTest(TreeDataFormat format) {
+        testForAllVersionsSince(IidmVersion.V_1_12, v -> exportDisabledTest(format, v));
+    }
+
+    private void exportDisabledTest(TreeDataFormat format, IidmVersion version) {
+        // Export the network without the automation systems
+        ExportResult exportResult = writeNetwork(network, format, version, false);
+        // Check that the exported String does NOT contain OMS tags
+        Assertions.assertFalse(exportResult.content().contains(OverloadManagementSystemSerDe.ROOT_ELEMENT_NAME));
+        // Load the exported String to check if it is really valid
+        Network networkOutput = readNetwork(format, exportResult, true);
+        // Check that the read network has substations, lines, ... but no OMS (none were exported)
+        checkNetworkAgainstRef(networkOutput, false);
+    }
+
+    @ParameterizedTest
+    @MethodSource("provideFormats")
+    void importDisabledTest(TreeDataFormat format) {
+        testForAllVersionsSince(IidmVersion.V_1_12, v -> importDisabledTest(format, v));
+    }
+
+    private void importDisabledTest(TreeDataFormat format, IidmVersion version) {
+        // Export the network (with the automation systems)
+        ExportResult exportResult = writeNetwork(network, format, version, true);
+        // Check that the exported String DOES contain OMS tags
+        Assertions.assertTrue(exportResult.content().contains(OverloadManagementSystemSerDe.ROOT_ELEMENT_NAME));
+        // Load the exported String without the automation systems
+        Network networkOutput = readNetwork(format, exportResult, false);
+        // Check that the read network has substations, lines, ... but no OMS (none were imported)
+        checkNetworkAgainstRef(networkOutput, false);
+
+        // Final check: import the same network, but this time with the automation systems
+        // They should now be present
+        networkOutput = readNetwork(format, exportResult, true);
+        checkNetworkAgainstRef(networkOutput, true);
+    }
+
+    @ParameterizedTest
+    @MethodSource("provideFormats")
+    void roundTripWithInvalidOverloadManagementSystemsTest(TreeDataFormat format) {
+        Network n = createNetwork();
+        // Remove the monitoredElement of OMS2
+        n.getLine("LINE_1").remove();
+        ExportResult exportResult = writeNetwork(n, format, CURRENT_IIDM_VERSION, true);
+        Network networkOutput = readNetwork(format, exportResult, true);
+        Assertions.assertNotNull(networkOutput.getOverloadManagementSystem("OMS1"));
+        Assertions.assertNull(networkOutput.getOverloadManagementSystem("OMS2"));
+
+        // Remove the 3 windings transformer (3WT) of the OMS1's 3WT tripping
+        n.getThreeWindingsTransformer("3WT").remove();
+        exportResult = writeNetwork(n, format, CURRENT_IIDM_VERSION, true);
+        networkOutput = readNetwork(format, exportResult, true);
+        Assertions.assertNull(networkOutput.getOverloadManagementSystem("OMS1"));
+
+        // Recreate the network
+        n = createNetwork();
+
+        // Remove the branch of the OMS2's tripping
+        n.getLine("LINE_2").remove();
+        exportResult = writeNetwork(n, format, CURRENT_IIDM_VERSION, true);
+        networkOutput = readNetwork(format, exportResult, true);
+        Assertions.assertNotNull(networkOutput.getOverloadManagementSystem("OMS1"));
+        Assertions.assertNull(networkOutput.getOverloadManagementSystem("OMS2"));
+
+        // No test on switch tripping because the switch cannot be removed with the API.
+    }
+
+    private static ExportResult writeNetwork(Network n, TreeDataFormat format, IidmVersion version, boolean withAutomationSystems) {
+        ExportOptions options = new ExportOptions()
+                .setFormat(format)
+                .setWithAutomationSystems(withAutomationSystems)
+                .setVersion(version.toString("."));
+        ExportResult exportResult;
+        try (ByteArrayOutputStream os = new ByteArrayOutputStream()) {
+            Anonymizer anonymizer = NetworkSerDe.write(n, options, os);
+            String exportedContent = os.toString(StandardCharsets.UTF_8);
+            exportResult = new ExportResult(anonymizer, exportedContent);
+        } catch (IOException ex) {
+            throw new UncheckedIOException(ex);
+        }
+        return exportResult;
+    }
+
+    private static Network readNetwork(TreeDataFormat format, ExportResult exportResult, boolean withAutomationSystems) {
+        ImportOptions options = new ImportOptions()
+                .setFormat(format)
+                .setWithAutomationSystems(withAutomationSystems);
+        Network networkOutput;
+        try (InputStream is = IOUtils.toInputStream(exportResult.content(), "UTF-8")) {
+            networkOutput = NetworkSerDe.read(is, options, exportResult.anonymizer());
+        } catch (IOException ex) {
+            throw new UncheckedIOException(ex);
+        }
+        return networkOutput;
+    }
+
+    private static void checkNetworkAgainstRef(Network networkOutput, boolean shouldHaveAutomationSystems) {
+        Assertions.assertEquals(network.getSubstationCount(), networkOutput.getSubstationCount());
+        Assertions.assertEquals(network.getLineCount(), networkOutput.getLineCount());
+        Assertions.assertEquals(network.getTwoWindingsTransformerCount(), networkOutput.getTwoWindingsTransformerCount());
+        Assertions.assertEquals(network.getThreeWindingsTransformerCount(), networkOutput.getThreeWindingsTransformerCount());
+        int expectedNbAutomationSystem = shouldHaveAutomationSystems ? network.getOverloadManagementSystemCount() : 0;
+        Assertions.assertEquals(expectedNbAutomationSystem, networkOutput.getOverloadManagementSystemCount());
+    }
+
+    private static Network createNetwork() {
+        Network network = NetworkFactory.findDefault().createNetwork("fictitious", "test");
+        network.setCaseDate(ZonedDateTime.parse("2024-01-02T15:00:00.000+01:00"));
+        network.setForecastDistance(0);
+
+        // Create a substation "S1", with 3 voltage levels "S1_400", "S1_220" and "S1_90"
+        Substation s1 = network.newSubstation().setId("S1").add();
+        VoltageLevel s1v400 = createVoltageLevel(s1, 400);
+        VoltageLevel s1v225 = createVoltageLevel(s1, 225);
+        VoltageLevel s1v90 = createVoltageLevel(s1, 90);
+
+        // Create a substation "S2", with 1 voltage level "S2_400"
+        Substation s2 = network.newSubstation().setId("S2").add();
+        VoltageLevel s2v400 = createVoltageLevel(s2, 400);
+
+        // Create 2 lines between "S1_400" and "S2_400" ("LINE_1" and "LINE_2")
+        createLine(network, s1v400, s2v400, 1);
+        createLine(network, s1v400, s2v400, 2);
+
+        // Create a 2-windings transformer between "S1_400" and "S1_225" ("2WT")
+        createTwoWindingsTransformer(s1, s1v400, s1v225);
+
+        // Create a 3-windings transformer between "S1_400", "S1_225" and "S1_90" ("3WT")
+        createThreeWindingsTransformer(s1, s1v400, s1v225, s1v90);
+
+        // Create an overload management system with trippings on "2WT", "3WT" and "S1_400_LINE_2_BREAKER"
+        s1.newOverloadManagementSystem()
+                .setId("OMS1")
+                .setName("1st OMS")
+                .setEnabled(true)
+                .setMonitoredElementId("2WT")
+                .setMonitoredElementSide(ThreeSides.TWO)
+                .newBranchTripping()
+                    .setKey("tripping1")
+                    .setName("1st tripping name")
+                    .setCurrentLimit(1200)
+                    .setOpenAction(true)
+                    .setBranchToOperateId("2WT")
+                    .setSideToOperate(TwoSides.ONE)
+                    .add()
+                .newThreeWindingsTransformerTripping()
+                    .setKey("tripping2")
+                    .setName("2nd tripping name")
+                    .setCurrentLimit(1000)
+                    .setOpenAction(false)
+                    .setThreeWindingsTransformerToOperateId("3WT")
+                    .setSideToOperate(ThreeSides.ONE)
+                    .add()
+                .newSwitchTripping()
+                    .setKey("tripping3")
+                    .setName("3rd tripping name")
+                    .setCurrentLimit(1000)
+                    .setOpenAction(true)
+                    .setSwitchToOperateId("S1_400_LINE_2_BREAKER")
+                    .add()
+                .add();
+
+        // Create an overload management system monitoring "LINE_1" with a tripping on "LINE_2".
+        // Note that this test is very important since the OMS uses identifiers of elements which are not
+        // defined in the same substation, and furthermore which will be serialized AFTER the OMS (lines are serialized
+        // after the substations). This means that the referenced elements won't be already in the network in creation
+        // when the OMS will be read.
+        s1.newOverloadManagementSystem()
+                .setId("OMS2")
+                .setName("2nd OMS")
+                .setEnabled(true)
+                .setMonitoredElementId("LINE_1")
+                .setMonitoredElementSide(ThreeSides.ONE)
+                .newBranchTripping()
+                    .setKey("tripping")
+                    .setName("tripping name")
+                    .setCurrentLimit(1300)
+                    .setOpenAction(true)
+                    .setBranchToOperateId("LINE_2")
+                    .setSideToOperate(TwoSides.ONE)
+                    .add()
+                .add();
+        return network;
+    }
+
+    private static VoltageLevel createVoltageLevel(Substation substation, int nominalV) {
+        String vlId = String.format("%s_%d", substation.getId(), nominalV);
+        VoltageLevel vl = substation.newVoltageLevel()
+                .setId(vlId)
+                .setNominalV(nominalV)
+                .setTopologyKind(TopologyKind.NODE_BREAKER)
+                .add();
+        vl.getNodeBreakerView().newBusbarSection()
+                .setId(vlId + "_BBS")
+                .setNode(0)
+                .add();
+        return vl;
+    }
+
+    private static void createLine(Network network, VoltageLevel s1v400, VoltageLevel s2v400, int nb) {
+        createSwitch(s1v400, "S1_400_LINE_" + nb + "_DISCONNECTOR", SwitchKind.DISCONNECTOR, 0, nb);
+        createSwitch(s1v400, "S1_400_LINE_" + nb + "_BREAKER", SwitchKind.BREAKER, nb, 10 + nb);
+        createSwitch(s2v400, "S2_400_LINE_" + nb + "_DISCONNECTOR", SwitchKind.DISCONNECTOR, 0, nb);
+        createSwitch(s2v400, "S2_400_LINE_" + nb + "_BREAKER", SwitchKind.BREAKER, nb, 10 + nb);
+        network.newLine()
+                .setId("LINE_" + nb)
+                .setR(0.01)
+                .setX(50)
+                .setG1(0.0)
+                .setB1(0.0)
+                .setG2(0.0)
+                .setB2(0.0)
+                .setNode1(10 + nb)
+                .setVoltageLevel1("S1_400")
+                .setNode2(10 + nb)
+                .setVoltageLevel2("S2_400")
+                .add();
+    }
+
+    private static void createTwoWindingsTransformer(Substation s1, VoltageLevel s1v400, VoltageLevel s1v225) {
+        createSwitch(s1v400, "S1_400_BBS_2WT_DISCONNECTOR", SwitchKind.DISCONNECTOR, 0, 13);
+        createSwitch(s1v400, "S1_400_2WT_BREAKER", SwitchKind.BREAKER, 13, 23);
+        createSwitch(s1v225, "S1_225_BBS_2WT_DISCONNECTOR", SwitchKind.DISCONNECTOR, 0, 13);
+        createSwitch(s1v225, "S1_225_2WT_BREAKER", SwitchKind.BREAKER, 13, 23);
+        s1.newTwoWindingsTransformer()
+                .setId("2WT")
+                .setR(2.0)
+                .setX(25)
+                .setG(0.0)
+                .setB(3.2E-5)
+                .setRatedU1(400.0)
+                .setRatedU2(225.0)
+                .setNode1(23)
+                .setVoltageLevel1("S1_400")
+                .setNode2(23)
+                .setVoltageLevel2("S1_225")
+                .add();
+    }
+
+    private static void createThreeWindingsTransformer(Substation s1, VoltageLevel s1v400, VoltageLevel s1v225, VoltageLevel s1v90) {
+        createSwitch(s1v400, "S1_400_BBS_3WT_DISCONNECTOR", SwitchKind.DISCONNECTOR, 0, 14);
+        createSwitch(s1v400, "S1_400_3WT_BREAKER", SwitchKind.BREAKER, 14, 24);
+        createSwitch(s1v225, "S1_225_BBS_3WT_DISCONNECTOR", SwitchKind.DISCONNECTOR, 0, 14);
+        createSwitch(s1v225, "S1_225_3WT_BREAKER", SwitchKind.BREAKER, 14, 24);
+        createSwitch(s1v90, "S1_90_BBS_3WT_DISCONNECTOR", SwitchKind.DISCONNECTOR, 0, 14);
+        createSwitch(s1v90, "S1_90_3WT_BREAKER", SwitchKind.BREAKER, 14, 24);
+        s1.newThreeWindingsTransformer()
+                .setId("3WT")
+                .setRatedU0(400)
+                .newLeg1()
+                    .setR(0.001).setX(0.000001).setB(0).setG(0)
+                    .setNode(24)
+                    .setRatedU(400)
+                    .setVoltageLevel("S1_400")
+                    .add()
+                .newLeg2()
+                    .setR(0.1).setX(0.00001).setB(0).setG(0)
+                    .setNode(24)
+                    .setRatedU(225)
+                    .setVoltageLevel("S1_225")
+                    .add()
+                .newLeg3()
+                    .setR(0.01).setX(0.0001).setB(0).setG(0)
+                    .setNode(24)
+                    .setRatedU(90)
+                    .setVoltageLevel("S1_90")
+                    .add()
+               .add();
+    }
+
+    private static void createSwitch(VoltageLevel vl, String id, SwitchKind kind, int node1, int node2) {
+        vl.getNodeBreakerView().newSwitch()
+                .setId(id)
+                .setKind(kind)
+                .setOpen(true)
+                .setNode1(node1)
+                .setNode2(node2)
+                .add();
+    }
+}
diff --git a/iidm/iidm-serde/src/test/java/com/powsybl/iidm/serde/XMLExporterTest.java b/iidm/iidm-serde/src/test/java/com/powsybl/iidm/serde/XMLExporterTest.java
index b38b91254a2..d18d0e8dda7 100644
--- a/iidm/iidm-serde/src/test/java/com/powsybl/iidm/serde/XMLExporterTest.java
+++ b/iidm/iidm-serde/src/test/java/com/powsybl/iidm/serde/XMLExporterTest.java
@@ -56,7 +56,7 @@ void exportTest() throws IOException {
     @Test
     void paramsTest() {
         var xmlExporter = new XMLExporter();
-        assertEquals(10, xmlExporter.getParameters().size());
+        assertEquals(11, xmlExporter.getParameters().size());
         assertEquals("IIDM XML v" + CURRENT_IIDM_VERSION.toString(".") + " exporter", xmlExporter.getComment());
     }
 
diff --git a/iidm/iidm-serde/src/test/java/com/powsybl/iidm/serde/XMLImporterTest.java b/iidm/iidm-serde/src/test/java/com/powsybl/iidm/serde/XMLImporterTest.java
index 01e194663fb..90294d2fc8b 100644
--- a/iidm/iidm-serde/src/test/java/com/powsybl/iidm/serde/XMLImporterTest.java
+++ b/iidm/iidm-serde/src/test/java/com/powsybl/iidm/serde/XMLImporterTest.java
@@ -137,7 +137,7 @@ void getFormat() {
 
     @Test
     void getParameters() {
-        assertEquals(2, importer.getParameters().size());
+        assertEquals(3, importer.getParameters().size());
         assertEquals("iidm.import.xml.throw-exception-if-extension-not-found", importer.getParameters().get(0).getName());
         assertEquals(Arrays.asList("iidm.import.xml.throw-exception-if-extension-not-found", "throwExceptionIfExtensionNotFound"), importer.getParameters().get(0).getNames());
     }
diff --git a/iidm/iidm-serde/src/test/resources/V1_0/overloadManagementSystemRoundTripRef.xml b/iidm/iidm-serde/src/test/resources/V1_0/overloadManagementSystemRoundTripRef.xml
new file mode 100644
index 00000000000..57741decbc2
--- /dev/null
+++ b/iidm/iidm-serde/src/test/resources/V1_0/overloadManagementSystemRoundTripRef.xml
@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<iidm:network xmlns:iidm="http://www.itesla_project.eu/schema/iidm/1_0" id="fictitious" caseDate="2024-01-02T15:00:00.000+01:00" forecastDistance="0" sourceFormat="test">
+    <iidm:substation id="S1">
+        <iidm:voltageLevel id="S1_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology nodeCount="25">
+                <iidm:busbarSection id="S1_400_BBS" node="0"/>
+                <iidm:switch id="S1_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S1_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S1_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S1_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+                <iidm:switch id="S1_400_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_400_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_400_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_400_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_225" nominalV="225.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology nodeCount="25">
+                <iidm:busbarSection id="S1_225_BBS" node="0"/>
+                <iidm:switch id="S1_225_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_225_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_225_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_225_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_90" nominalV="90.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology nodeCount="25">
+                <iidm:busbarSection id="S1_90_BBS" node="0"/>
+                <iidm:switch id="S1_90_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_90_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:twoWindingsTransformer id="2WT" r="2.0" x="25.0" g="0.0" b="3.2E-5" ratedU1="400.0" ratedU2="225.0" voltageLevelId1="S1_400" node1="23" voltageLevelId2="S1_225" node2="23"/>
+        <iidm:threeWindingsTransformer id="3WT" r1="0.001" x1="1.0E-6" g1="0.0" b1="0.0" ratedU1="400.0" r2="0.1" x2="1.0E-5" ratedU2="225.0" r3="0.01" x3="1.0E-4" ratedU3="90.0" voltageLevelId1="S1_400" node1="24" voltageLevelId2="S1_225" node2="24" voltageLevelId3="S1_90" node3="24"/>
+    </iidm:substation>
+    <iidm:substation id="S2">
+        <iidm:voltageLevel id="S2_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology nodeCount="13">
+                <iidm:busbarSection id="S2_400_BBS" node="0"/>
+                <iidm:switch id="S2_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S2_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S2_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S2_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+    </iidm:substation>
+    <iidm:line id="LINE_1" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="11" voltageLevelId2="S2_400" node2="11"/>
+    <iidm:line id="LINE_2" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="12" voltageLevelId2="S2_400" node2="12"/>
+</iidm:network>
diff --git a/iidm/iidm-serde/src/test/resources/V1_1/overloadManagementSystemRoundTripRef.xml b/iidm/iidm-serde/src/test/resources/V1_1/overloadManagementSystemRoundTripRef.xml
new file mode 100644
index 00000000000..24815f6c2e8
--- /dev/null
+++ b/iidm/iidm-serde/src/test/resources/V1_1/overloadManagementSystemRoundTripRef.xml
@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<iidm:network xmlns:iidm="http://www.powsybl.org/schema/iidm/1_1" id="fictitious" caseDate="2024-01-02T15:00:00.000+01:00" forecastDistance="0" sourceFormat="test">
+    <iidm:substation id="S1">
+        <iidm:voltageLevel id="S1_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology nodeCount="25">
+                <iidm:busbarSection id="S1_400_BBS" node="0"/>
+                <iidm:switch id="S1_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S1_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S1_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S1_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+                <iidm:switch id="S1_400_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_400_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_400_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_400_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_225" nominalV="225.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology nodeCount="25">
+                <iidm:busbarSection id="S1_225_BBS" node="0"/>
+                <iidm:switch id="S1_225_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_225_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_225_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_225_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_90" nominalV="90.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology nodeCount="25">
+                <iidm:busbarSection id="S1_90_BBS" node="0"/>
+                <iidm:switch id="S1_90_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_90_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:twoWindingsTransformer id="2WT" r="2.0" x="25.0" g="0.0" b="3.2E-5" ratedU1="400.0" ratedU2="225.0" voltageLevelId1="S1_400" node1="23" voltageLevelId2="S1_225" node2="23"/>
+        <iidm:threeWindingsTransformer id="3WT" r1="0.001" x1="1.0E-6" g1="0.0" b1="0.0" ratedU1="400.0" r2="0.1" x2="1.0E-5" g2="0.0" b2="0.0" ratedU2="225.0" r3="0.01" x3="1.0E-4" g3="0.0" b3="0.0" ratedU3="90.0" ratedU0="400.0" voltageLevelId1="S1_400" node1="24" voltageLevelId2="S1_225" node2="24" voltageLevelId3="S1_90" node3="24"/>
+    </iidm:substation>
+    <iidm:substation id="S2">
+        <iidm:voltageLevel id="S2_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology nodeCount="13">
+                <iidm:busbarSection id="S2_400_BBS" node="0"/>
+                <iidm:switch id="S2_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S2_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S2_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S2_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+    </iidm:substation>
+    <iidm:line id="LINE_1" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="11" voltageLevelId2="S2_400" node2="11"/>
+    <iidm:line id="LINE_2" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="12" voltageLevelId2="S2_400" node2="12"/>
+</iidm:network>
diff --git a/iidm/iidm-serde/src/test/resources/V1_10/overloadManagementSystemRoundTripRef.xml b/iidm/iidm-serde/src/test/resources/V1_10/overloadManagementSystemRoundTripRef.xml
new file mode 100644
index 00000000000..b7d479a61e8
--- /dev/null
+++ b/iidm/iidm-serde/src/test/resources/V1_10/overloadManagementSystemRoundTripRef.xml
@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<iidm:network xmlns:iidm="http://www.powsybl.org/schema/iidm/1_10" id="fictitious" caseDate="2024-01-02T15:00:00.000+01:00" forecastDistance="0" sourceFormat="test" minimumValidationLevel="STEADY_STATE_HYPOTHESIS">
+    <iidm:substation id="S1">
+        <iidm:voltageLevel id="S1_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_400_BBS" node="0"/>
+                <iidm:switch id="S1_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S1_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S1_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S1_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+                <iidm:switch id="S1_400_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_400_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_400_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_400_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_225" nominalV="225.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_225_BBS" node="0"/>
+                <iidm:switch id="S1_225_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_225_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_225_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_225_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_90" nominalV="90.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_90_BBS" node="0"/>
+                <iidm:switch id="S1_90_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_90_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:twoWindingsTransformer id="2WT" r="2.0" x="25.0" g="0.0" b="3.2E-5" ratedU1="400.0" ratedU2="225.0" voltageLevelId1="S1_400" node1="23" voltageLevelId2="S1_225" node2="23"/>
+        <iidm:threeWindingsTransformer id="3WT" r1="0.001" x1="1.0E-6" g1="0.0" b1="0.0" ratedU1="400.0" r2="0.1" x2="1.0E-5" g2="0.0" b2="0.0" ratedU2="225.0" r3="0.01" x3="1.0E-4" g3="0.0" b3="0.0" ratedU3="90.0" ratedU0="400.0" voltageLevelId1="S1_400" node1="24" voltageLevelId2="S1_225" node2="24" voltageLevelId3="S1_90" node3="24"/>
+    </iidm:substation>
+    <iidm:substation id="S2">
+        <iidm:voltageLevel id="S2_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S2_400_BBS" node="0"/>
+                <iidm:switch id="S2_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S2_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S2_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S2_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+    </iidm:substation>
+    <iidm:line id="LINE_1" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="11" voltageLevelId2="S2_400" node2="11"/>
+    <iidm:line id="LINE_2" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="12" voltageLevelId2="S2_400" node2="12"/>
+</iidm:network>
diff --git a/iidm/iidm-serde/src/test/resources/V1_11/overloadManagementSystemRoundTripRef.xml b/iidm/iidm-serde/src/test/resources/V1_11/overloadManagementSystemRoundTripRef.xml
new file mode 100644
index 00000000000..2ac9f768f2a
--- /dev/null
+++ b/iidm/iidm-serde/src/test/resources/V1_11/overloadManagementSystemRoundTripRef.xml
@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<iidm:network xmlns:iidm="http://www.powsybl.org/schema/iidm/1_11" id="fictitious" caseDate="2024-01-02T15:00:00.000+01:00" forecastDistance="0" sourceFormat="test" minimumValidationLevel="STEADY_STATE_HYPOTHESIS">
+    <iidm:substation id="S1">
+        <iidm:voltageLevel id="S1_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_400_BBS" node="0"/>
+                <iidm:switch id="S1_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S1_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S1_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S1_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+                <iidm:switch id="S1_400_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_400_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_400_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_400_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_225" nominalV="225.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_225_BBS" node="0"/>
+                <iidm:switch id="S1_225_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_225_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_225_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_225_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_90" nominalV="90.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_90_BBS" node="0"/>
+                <iidm:switch id="S1_90_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_90_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:twoWindingsTransformer id="2WT" r="2.0" x="25.0" g="0.0" b="3.2E-5" ratedU1="400.0" ratedU2="225.0" voltageLevelId1="S1_400" node1="23" voltageLevelId2="S1_225" node2="23"/>
+        <iidm:threeWindingsTransformer id="3WT" r1="0.001" x1="1.0E-6" g1="0.0" b1="0.0" ratedU1="400.0" r2="0.1" x2="1.0E-5" g2="0.0" b2="0.0" ratedU2="225.0" r3="0.01" x3="1.0E-4" g3="0.0" b3="0.0" ratedU3="90.0" ratedU0="400.0" voltageLevelId1="S1_400" node1="24" voltageLevelId2="S1_225" node2="24" voltageLevelId3="S1_90" node3="24"/>
+    </iidm:substation>
+    <iidm:substation id="S2">
+        <iidm:voltageLevel id="S2_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S2_400_BBS" node="0"/>
+                <iidm:switch id="S2_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S2_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S2_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S2_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+    </iidm:substation>
+    <iidm:line id="LINE_1" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="11" voltageLevelId2="S2_400" node2="11"/>
+    <iidm:line id="LINE_2" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="12" voltageLevelId2="S2_400" node2="12"/>
+</iidm:network>
diff --git a/iidm/iidm-serde/src/test/resources/V1_12/overloadManagementSystemRoundTripRef.xml b/iidm/iidm-serde/src/test/resources/V1_12/overloadManagementSystemRoundTripRef.xml
new file mode 100644
index 00000000000..027422ab9d7
--- /dev/null
+++ b/iidm/iidm-serde/src/test/resources/V1_12/overloadManagementSystemRoundTripRef.xml
@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<iidm:network xmlns:iidm="http://www.powsybl.org/schema/iidm/1_12" id="fictitious" caseDate="2024-01-02T15:00:00.000+01:00" forecastDistance="0" sourceFormat="test" minimumValidationLevel="STEADY_STATE_HYPOTHESIS">
+    <iidm:substation id="S1">
+        <iidm:voltageLevel id="S1_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_400_BBS" node="0"/>
+                <iidm:switch id="S1_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S1_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S1_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S1_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+                <iidm:switch id="S1_400_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_400_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_400_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_400_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_225" nominalV="225.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_225_BBS" node="0"/>
+                <iidm:switch id="S1_225_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_225_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_225_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_225_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_90" nominalV="90.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_90_BBS" node="0"/>
+                <iidm:switch id="S1_90_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_90_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:twoWindingsTransformer id="2WT" r="2.0" x="25.0" g="0.0" b="3.2E-5" ratedU1="400.0" ratedU2="225.0" voltageLevelId1="S1_400" node1="23" voltageLevelId2="S1_225" node2="23"/>
+        <iidm:threeWindingsTransformer id="3WT" r1="0.001" x1="1.0E-6" g1="0.0" b1="0.0" ratedU1="400.0" r2="0.1" x2="1.0E-5" g2="0.0" b2="0.0" ratedU2="225.0" r3="0.01" x3="1.0E-4" g3="0.0" b3="0.0" ratedU3="90.0" ratedU0="400.0" voltageLevelId1="S1_400" node1="24" voltageLevelId2="S1_225" node2="24" voltageLevelId3="S1_90" node3="24"/>
+        <iidm:overloadManagementSystem id="OMS1" name="1st OMS" enabled="true" monitoredElementId="2WT" side="TWO">
+            <iidm:branchTripping key="tripping1" name="1st tripping name" currentLimit="1200.0" openAction="true" branchId="2WT" side="ONE"/>
+            <iidm:threeWindingsTransformerTripping key="tripping2" name="2nd tripping name" currentLimit="1000.0" openAction="false" threeWindingsTransformerId="3WT" side="ONE"/>
+            <iidm:switchTripping key="tripping3" name="3rd tripping name" currentLimit="1000.0" openAction="true" switchId="S1_400_LINE_2_BREAKER"/>
+        </iidm:overloadManagementSystem>
+        <iidm:overloadManagementSystem id="OMS2" name="2nd OMS" enabled="true" monitoredElementId="LINE_1" side="ONE">
+            <iidm:branchTripping key="tripping" name="tripping name" currentLimit="1300.0" openAction="true" branchId="LINE_2" side="ONE"/>
+        </iidm:overloadManagementSystem>
+    </iidm:substation>
+    <iidm:substation id="S2">
+        <iidm:voltageLevel id="S2_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S2_400_BBS" node="0"/>
+                <iidm:switch id="S2_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S2_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S2_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S2_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+    </iidm:substation>
+    <iidm:line id="LINE_1" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="11" voltageLevelId2="S2_400" node2="11"/>
+    <iidm:line id="LINE_2" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="12" voltageLevelId2="S2_400" node2="12"/>
+</iidm:network>
diff --git a/iidm/iidm-serde/src/test/resources/V1_2/overloadManagementSystemRoundTripRef.xml b/iidm/iidm-serde/src/test/resources/V1_2/overloadManagementSystemRoundTripRef.xml
new file mode 100644
index 00000000000..18aadca2b1f
--- /dev/null
+++ b/iidm/iidm-serde/src/test/resources/V1_2/overloadManagementSystemRoundTripRef.xml
@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<iidm:network xmlns:iidm="http://www.powsybl.org/schema/iidm/1_2" id="fictitious" caseDate="2024-01-02T15:00:00.000+01:00" forecastDistance="0" sourceFormat="test">
+    <iidm:substation id="S1">
+        <iidm:voltageLevel id="S1_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_400_BBS" node="0"/>
+                <iidm:switch id="S1_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S1_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S1_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S1_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+                <iidm:switch id="S1_400_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_400_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_400_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_400_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_225" nominalV="225.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_225_BBS" node="0"/>
+                <iidm:switch id="S1_225_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_225_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_225_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_225_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_90" nominalV="90.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_90_BBS" node="0"/>
+                <iidm:switch id="S1_90_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_90_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:twoWindingsTransformer id="2WT" r="2.0" x="25.0" g="0.0" b="3.2E-5" ratedU1="400.0" ratedU2="225.0" voltageLevelId1="S1_400" node1="23" voltageLevelId2="S1_225" node2="23"/>
+        <iidm:threeWindingsTransformer id="3WT" r1="0.001" x1="1.0E-6" g1="0.0" b1="0.0" ratedU1="400.0" r2="0.1" x2="1.0E-5" g2="0.0" b2="0.0" ratedU2="225.0" r3="0.01" x3="1.0E-4" g3="0.0" b3="0.0" ratedU3="90.0" ratedU0="400.0" voltageLevelId1="S1_400" node1="24" voltageLevelId2="S1_225" node2="24" voltageLevelId3="S1_90" node3="24"/>
+    </iidm:substation>
+    <iidm:substation id="S2">
+        <iidm:voltageLevel id="S2_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S2_400_BBS" node="0"/>
+                <iidm:switch id="S2_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S2_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S2_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S2_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+    </iidm:substation>
+    <iidm:line id="LINE_1" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="11" voltageLevelId2="S2_400" node2="11"/>
+    <iidm:line id="LINE_2" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="12" voltageLevelId2="S2_400" node2="12"/>
+</iidm:network>
diff --git a/iidm/iidm-serde/src/test/resources/V1_3/overloadManagementSystemRoundTripRef.xml b/iidm/iidm-serde/src/test/resources/V1_3/overloadManagementSystemRoundTripRef.xml
new file mode 100644
index 00000000000..5ce6c74523e
--- /dev/null
+++ b/iidm/iidm-serde/src/test/resources/V1_3/overloadManagementSystemRoundTripRef.xml
@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<iidm:network xmlns:iidm="http://www.powsybl.org/schema/iidm/1_3" id="fictitious" caseDate="2024-01-02T15:00:00.000+01:00" forecastDistance="0" sourceFormat="test">
+    <iidm:substation id="S1">
+        <iidm:voltageLevel id="S1_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_400_BBS" node="0"/>
+                <iidm:switch id="S1_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S1_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S1_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S1_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+                <iidm:switch id="S1_400_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_400_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_400_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_400_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_225" nominalV="225.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_225_BBS" node="0"/>
+                <iidm:switch id="S1_225_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_225_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_225_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_225_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_90" nominalV="90.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_90_BBS" node="0"/>
+                <iidm:switch id="S1_90_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_90_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:twoWindingsTransformer id="2WT" r="2.0" x="25.0" g="0.0" b="3.2E-5" ratedU1="400.0" ratedU2="225.0" voltageLevelId1="S1_400" node1="23" voltageLevelId2="S1_225" node2="23"/>
+        <iidm:threeWindingsTransformer id="3WT" r1="0.001" x1="1.0E-6" g1="0.0" b1="0.0" ratedU1="400.0" r2="0.1" x2="1.0E-5" g2="0.0" b2="0.0" ratedU2="225.0" r3="0.01" x3="1.0E-4" g3="0.0" b3="0.0" ratedU3="90.0" ratedU0="400.0" voltageLevelId1="S1_400" node1="24" voltageLevelId2="S1_225" node2="24" voltageLevelId3="S1_90" node3="24"/>
+    </iidm:substation>
+    <iidm:substation id="S2">
+        <iidm:voltageLevel id="S2_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S2_400_BBS" node="0"/>
+                <iidm:switch id="S2_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S2_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S2_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S2_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+    </iidm:substation>
+    <iidm:line id="LINE_1" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="11" voltageLevelId2="S2_400" node2="11"/>
+    <iidm:line id="LINE_2" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="12" voltageLevelId2="S2_400" node2="12"/>
+</iidm:network>
diff --git a/iidm/iidm-serde/src/test/resources/V1_4/overloadManagementSystemRoundTripRef.xml b/iidm/iidm-serde/src/test/resources/V1_4/overloadManagementSystemRoundTripRef.xml
new file mode 100644
index 00000000000..5cccf75ba2b
--- /dev/null
+++ b/iidm/iidm-serde/src/test/resources/V1_4/overloadManagementSystemRoundTripRef.xml
@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<iidm:network xmlns:iidm="http://www.powsybl.org/schema/iidm/1_4" id="fictitious" caseDate="2024-01-02T15:00:00.000+01:00" forecastDistance="0" sourceFormat="test">
+    <iidm:substation id="S1">
+        <iidm:voltageLevel id="S1_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_400_BBS" node="0"/>
+                <iidm:switch id="S1_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S1_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S1_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S1_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+                <iidm:switch id="S1_400_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_400_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_400_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_400_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_225" nominalV="225.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_225_BBS" node="0"/>
+                <iidm:switch id="S1_225_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_225_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_225_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_225_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_90" nominalV="90.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_90_BBS" node="0"/>
+                <iidm:switch id="S1_90_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_90_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:twoWindingsTransformer id="2WT" r="2.0" x="25.0" g="0.0" b="3.2E-5" ratedU1="400.0" ratedU2="225.0" voltageLevelId1="S1_400" node1="23" voltageLevelId2="S1_225" node2="23"/>
+        <iidm:threeWindingsTransformer id="3WT" r1="0.001" x1="1.0E-6" g1="0.0" b1="0.0" ratedU1="400.0" r2="0.1" x2="1.0E-5" g2="0.0" b2="0.0" ratedU2="225.0" r3="0.01" x3="1.0E-4" g3="0.0" b3="0.0" ratedU3="90.0" ratedU0="400.0" voltageLevelId1="S1_400" node1="24" voltageLevelId2="S1_225" node2="24" voltageLevelId3="S1_90" node3="24"/>
+    </iidm:substation>
+    <iidm:substation id="S2">
+        <iidm:voltageLevel id="S2_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S2_400_BBS" node="0"/>
+                <iidm:switch id="S2_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S2_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S2_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S2_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+    </iidm:substation>
+    <iidm:line id="LINE_1" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="11" voltageLevelId2="S2_400" node2="11"/>
+    <iidm:line id="LINE_2" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="12" voltageLevelId2="S2_400" node2="12"/>
+</iidm:network>
diff --git a/iidm/iidm-serde/src/test/resources/V1_5/overloadManagementSystemRoundTripRef.xml b/iidm/iidm-serde/src/test/resources/V1_5/overloadManagementSystemRoundTripRef.xml
new file mode 100644
index 00000000000..e1a3fa3787f
--- /dev/null
+++ b/iidm/iidm-serde/src/test/resources/V1_5/overloadManagementSystemRoundTripRef.xml
@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<iidm:network xmlns:iidm="http://www.powsybl.org/schema/iidm/1_5" id="fictitious" caseDate="2024-01-02T15:00:00.000+01:00" forecastDistance="0" sourceFormat="test">
+    <iidm:substation id="S1">
+        <iidm:voltageLevel id="S1_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_400_BBS" node="0"/>
+                <iidm:switch id="S1_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S1_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S1_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S1_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+                <iidm:switch id="S1_400_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_400_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_400_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_400_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_225" nominalV="225.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_225_BBS" node="0"/>
+                <iidm:switch id="S1_225_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_225_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_225_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_225_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_90" nominalV="90.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_90_BBS" node="0"/>
+                <iidm:switch id="S1_90_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_90_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:twoWindingsTransformer id="2WT" r="2.0" x="25.0" g="0.0" b="3.2E-5" ratedU1="400.0" ratedU2="225.0" voltageLevelId1="S1_400" node1="23" voltageLevelId2="S1_225" node2="23"/>
+        <iidm:threeWindingsTransformer id="3WT" r1="0.001" x1="1.0E-6" g1="0.0" b1="0.0" ratedU1="400.0" r2="0.1" x2="1.0E-5" g2="0.0" b2="0.0" ratedU2="225.0" r3="0.01" x3="1.0E-4" g3="0.0" b3="0.0" ratedU3="90.0" ratedU0="400.0" voltageLevelId1="S1_400" node1="24" voltageLevelId2="S1_225" node2="24" voltageLevelId3="S1_90" node3="24"/>
+    </iidm:substation>
+    <iidm:substation id="S2">
+        <iidm:voltageLevel id="S2_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S2_400_BBS" node="0"/>
+                <iidm:switch id="S2_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S2_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S2_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S2_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+    </iidm:substation>
+    <iidm:line id="LINE_1" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="11" voltageLevelId2="S2_400" node2="11"/>
+    <iidm:line id="LINE_2" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="12" voltageLevelId2="S2_400" node2="12"/>
+</iidm:network>
diff --git a/iidm/iidm-serde/src/test/resources/V1_6/overloadManagementSystemRoundTripRef.xml b/iidm/iidm-serde/src/test/resources/V1_6/overloadManagementSystemRoundTripRef.xml
new file mode 100644
index 00000000000..4c9c25e0450
--- /dev/null
+++ b/iidm/iidm-serde/src/test/resources/V1_6/overloadManagementSystemRoundTripRef.xml
@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<iidm:network xmlns:iidm="http://www.powsybl.org/schema/iidm/1_6" id="fictitious" caseDate="2024-01-02T15:00:00.000+01:00" forecastDistance="0" sourceFormat="test">
+    <iidm:substation id="S1">
+        <iidm:voltageLevel id="S1_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_400_BBS" node="0"/>
+                <iidm:switch id="S1_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S1_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S1_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S1_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+                <iidm:switch id="S1_400_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_400_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_400_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_400_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_225" nominalV="225.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_225_BBS" node="0"/>
+                <iidm:switch id="S1_225_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_225_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_225_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_225_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_90" nominalV="90.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_90_BBS" node="0"/>
+                <iidm:switch id="S1_90_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_90_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:twoWindingsTransformer id="2WT" r="2.0" x="25.0" g="0.0" b="3.2E-5" ratedU1="400.0" ratedU2="225.0" voltageLevelId1="S1_400" node1="23" voltageLevelId2="S1_225" node2="23"/>
+        <iidm:threeWindingsTransformer id="3WT" r1="0.001" x1="1.0E-6" g1="0.0" b1="0.0" ratedU1="400.0" r2="0.1" x2="1.0E-5" g2="0.0" b2="0.0" ratedU2="225.0" r3="0.01" x3="1.0E-4" g3="0.0" b3="0.0" ratedU3="90.0" ratedU0="400.0" voltageLevelId1="S1_400" node1="24" voltageLevelId2="S1_225" node2="24" voltageLevelId3="S1_90" node3="24"/>
+    </iidm:substation>
+    <iidm:substation id="S2">
+        <iidm:voltageLevel id="S2_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S2_400_BBS" node="0"/>
+                <iidm:switch id="S2_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S2_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S2_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S2_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+    </iidm:substation>
+    <iidm:line id="LINE_1" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="11" voltageLevelId2="S2_400" node2="11"/>
+    <iidm:line id="LINE_2" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="12" voltageLevelId2="S2_400" node2="12"/>
+</iidm:network>
diff --git a/iidm/iidm-serde/src/test/resources/V1_7/overloadManagementSystemRoundTripRef.xml b/iidm/iidm-serde/src/test/resources/V1_7/overloadManagementSystemRoundTripRef.xml
new file mode 100644
index 00000000000..c6866f9cbec
--- /dev/null
+++ b/iidm/iidm-serde/src/test/resources/V1_7/overloadManagementSystemRoundTripRef.xml
@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<iidm:network xmlns:iidm="http://www.powsybl.org/schema/iidm/1_7" id="fictitious" caseDate="2024-01-02T15:00:00.000+01:00" forecastDistance="0" sourceFormat="test" minimumValidationLevel="STEADY_STATE_HYPOTHESIS">
+    <iidm:substation id="S1">
+        <iidm:voltageLevel id="S1_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_400_BBS" node="0"/>
+                <iidm:switch id="S1_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S1_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S1_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S1_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+                <iidm:switch id="S1_400_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_400_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_400_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_400_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_225" nominalV="225.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_225_BBS" node="0"/>
+                <iidm:switch id="S1_225_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_225_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_225_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_225_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_90" nominalV="90.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_90_BBS" node="0"/>
+                <iidm:switch id="S1_90_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_90_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:twoWindingsTransformer id="2WT" r="2.0" x="25.0" g="0.0" b="3.2E-5" ratedU1="400.0" ratedU2="225.0" voltageLevelId1="S1_400" node1="23" voltageLevelId2="S1_225" node2="23"/>
+        <iidm:threeWindingsTransformer id="3WT" r1="0.001" x1="1.0E-6" g1="0.0" b1="0.0" ratedU1="400.0" r2="0.1" x2="1.0E-5" g2="0.0" b2="0.0" ratedU2="225.0" r3="0.01" x3="1.0E-4" g3="0.0" b3="0.0" ratedU3="90.0" ratedU0="400.0" voltageLevelId1="S1_400" node1="24" voltageLevelId2="S1_225" node2="24" voltageLevelId3="S1_90" node3="24"/>
+    </iidm:substation>
+    <iidm:substation id="S2">
+        <iidm:voltageLevel id="S2_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S2_400_BBS" node="0"/>
+                <iidm:switch id="S2_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S2_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S2_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S2_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+    </iidm:substation>
+    <iidm:line id="LINE_1" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="11" voltageLevelId2="S2_400" node2="11"/>
+    <iidm:line id="LINE_2" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="12" voltageLevelId2="S2_400" node2="12"/>
+</iidm:network>
diff --git a/iidm/iidm-serde/src/test/resources/V1_8/overloadManagementSystemRoundTripRef.xml b/iidm/iidm-serde/src/test/resources/V1_8/overloadManagementSystemRoundTripRef.xml
new file mode 100644
index 00000000000..3a06ecbcfa5
--- /dev/null
+++ b/iidm/iidm-serde/src/test/resources/V1_8/overloadManagementSystemRoundTripRef.xml
@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<iidm:network xmlns:iidm="http://www.powsybl.org/schema/iidm/1_8" id="fictitious" caseDate="2024-01-02T15:00:00.000+01:00" forecastDistance="0" sourceFormat="test" minimumValidationLevel="STEADY_STATE_HYPOTHESIS">
+    <iidm:substation id="S1">
+        <iidm:voltageLevel id="S1_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_400_BBS" node="0"/>
+                <iidm:switch id="S1_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S1_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S1_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S1_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+                <iidm:switch id="S1_400_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_400_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_400_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_400_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_225" nominalV="225.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_225_BBS" node="0"/>
+                <iidm:switch id="S1_225_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_225_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_225_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_225_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_90" nominalV="90.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_90_BBS" node="0"/>
+                <iidm:switch id="S1_90_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_90_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:twoWindingsTransformer id="2WT" r="2.0" x="25.0" g="0.0" b="3.2E-5" ratedU1="400.0" ratedU2="225.0" voltageLevelId1="S1_400" node1="23" voltageLevelId2="S1_225" node2="23"/>
+        <iidm:threeWindingsTransformer id="3WT" r1="0.001" x1="1.0E-6" g1="0.0" b1="0.0" ratedU1="400.0" r2="0.1" x2="1.0E-5" g2="0.0" b2="0.0" ratedU2="225.0" r3="0.01" x3="1.0E-4" g3="0.0" b3="0.0" ratedU3="90.0" ratedU0="400.0" voltageLevelId1="S1_400" node1="24" voltageLevelId2="S1_225" node2="24" voltageLevelId3="S1_90" node3="24"/>
+    </iidm:substation>
+    <iidm:substation id="S2">
+        <iidm:voltageLevel id="S2_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S2_400_BBS" node="0"/>
+                <iidm:switch id="S2_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S2_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S2_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S2_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+    </iidm:substation>
+    <iidm:line id="LINE_1" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="11" voltageLevelId2="S2_400" node2="11"/>
+    <iidm:line id="LINE_2" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="12" voltageLevelId2="S2_400" node2="12"/>
+</iidm:network>
diff --git a/iidm/iidm-serde/src/test/resources/V1_9/overloadManagementSystemRoundTripRef.xml b/iidm/iidm-serde/src/test/resources/V1_9/overloadManagementSystemRoundTripRef.xml
new file mode 100644
index 00000000000..ac324374aa4
--- /dev/null
+++ b/iidm/iidm-serde/src/test/resources/V1_9/overloadManagementSystemRoundTripRef.xml
@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<iidm:network xmlns:iidm="http://www.powsybl.org/schema/iidm/1_9" id="fictitious" caseDate="2024-01-02T15:00:00.000+01:00" forecastDistance="0" sourceFormat="test" minimumValidationLevel="STEADY_STATE_HYPOTHESIS">
+    <iidm:substation id="S1">
+        <iidm:voltageLevel id="S1_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_400_BBS" node="0"/>
+                <iidm:switch id="S1_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S1_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S1_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S1_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+                <iidm:switch id="S1_400_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_400_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_400_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_400_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_225" nominalV="225.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_225_BBS" node="0"/>
+                <iidm:switch id="S1_225_BBS_2WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="13"/>
+                <iidm:switch id="S1_225_2WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="13" node2="23"/>
+                <iidm:switch id="S1_225_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_225_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="S1_90" nominalV="90.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S1_90_BBS" node="0"/>
+                <iidm:switch id="S1_90_BBS_3WT_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="14"/>
+                <iidm:switch id="S1_90_3WT_BREAKER" kind="BREAKER" retained="false" open="true" node1="14" node2="24"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:twoWindingsTransformer id="2WT" r="2.0" x="25.0" g="0.0" b="3.2E-5" ratedU1="400.0" ratedU2="225.0" voltageLevelId1="S1_400" node1="23" voltageLevelId2="S1_225" node2="23"/>
+        <iidm:threeWindingsTransformer id="3WT" r1="0.001" x1="1.0E-6" g1="0.0" b1="0.0" ratedU1="400.0" r2="0.1" x2="1.0E-5" g2="0.0" b2="0.0" ratedU2="225.0" r3="0.01" x3="1.0E-4" g3="0.0" b3="0.0" ratedU3="90.0" ratedU0="400.0" voltageLevelId1="S1_400" node1="24" voltageLevelId2="S1_225" node2="24" voltageLevelId3="S1_90" node3="24"/>
+    </iidm:substation>
+    <iidm:substation id="S2">
+        <iidm:voltageLevel id="S2_400" nominalV="400.0" topologyKind="NODE_BREAKER">
+            <iidm:nodeBreakerTopology>
+                <iidm:busbarSection id="S2_400_BBS" node="0"/>
+                <iidm:switch id="S2_400_LINE_1_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="1"/>
+                <iidm:switch id="S2_400_LINE_1_BREAKER" kind="BREAKER" retained="false" open="true" node1="1" node2="11"/>
+                <iidm:switch id="S2_400_LINE_2_DISCONNECTOR" kind="DISCONNECTOR" retained="false" open="true" node1="0" node2="2"/>
+                <iidm:switch id="S2_400_LINE_2_BREAKER" kind="BREAKER" retained="false" open="true" node1="2" node2="12"/>
+            </iidm:nodeBreakerTopology>
+        </iidm:voltageLevel>
+    </iidm:substation>
+    <iidm:line id="LINE_1" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="11" voltageLevelId2="S2_400" node2="11"/>
+    <iidm:line id="LINE_2" r="0.01" x="50.0" g1="0.0" b1="0.0" g2="0.0" b2="0.0" voltageLevelId1="S1_400" node1="12" voltageLevelId2="S2_400" node2="12"/>
+</iidm:network>