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LoadScalable: Do not apply constant power factor if P0 is zero #2897

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Feb 13, 2024
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LoadScalable: Do not apply constant power factor if P0 is zero #2897

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2 changes: 1 addition & 1 deletion .../iidm-modification/src/main/java/com/powsybl/iidm/modification/scalable/LoadScalable.java
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Original file line number Diff line number Diff line change
Expand Up @@ -150,7 +150,7 @@ public double scale(Network n, double asked, ScalingParameters parameters) {
LOGGER.info("Change active power setpoint of {} from {} to {} ",
l.getId(), oldP0, l.getP0());

if (parameters.isConstantPowerFactor()) {
if (parameters.isConstantPowerFactor() && oldP0 != 0) {
l.setQ0(l.getP0() * oldQ0 / oldP0);
LOGGER.info("Change reactive power setpoint of {} from {} to {} ",
l.getId(), oldQ0, l.getQ0());
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7 changes: 7 additions & 0 deletions ...m-modification/src/test/java/com/powsybl/iidm/modification/scalable/LoadScalableTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -185,6 +185,13 @@ void testConstantPowerFactor() {
ls1.scale(network, 20, parameters);
assertEquals(60, load.getP0(), 1e-3);
assertEquals(7.5, load.getQ0(), 1e-3);

ls1.reset(network);
assertEquals(0.0, load.getP0(), 1e-3);
assertEquals(7.5, load.getQ0(), 1e-3);
ls1.scale(network, -20, parameters);
assertEquals(20.0, load.getP0(), 1e-3);
assertEquals(7.5, load.getQ0(), 1e-3);
}

@Test
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