v0.9.0

• Upgrade to java 11 (#214)
• Migrate to PowSyBl 4.0.1 (#221, #224)
• DC sensitivity analysis (#82, #178, #189, #206, #207, #208, #219)
  • Sensitivity of injections (generators, loads, HVDCs) and phase shifters to branch flow
  • Sensitivity on N state and N-K states
  • Compute reference active power flows (N and N-K)
  • Distributed slack
  • Manage contingency propagation
• Fix participating generator with zero droop (#223)
• Plausible PMax parameter (#212)
• Fix DC equations when a1 is a variable (#213)
• Security analysis on bus breaker model (#204)
• Various refactoring
  • Refactor transformer conversion (#210)
  • Avoid looping on all branches at each contingency (#194)
  • Improve parameters management (#187)
  • Disabled parameter in LfBus/LfGenerator (#211)
• Transformer voltage control improvement (#200)
• Migrate to GraalVM 21.0.0 (#203, #222)
• Even-Shiloach corrections and optimisation (#192, #193)
• LoadFlowResult management after a DC loadflow (#190)
• Static Var Compensator : MinQ and MaxQ are computed using local voltage (#180)
• Slack distribution support for DC power flow (#183)
• Fix slack distribution on generation (#182)
• Add a parameter to use or not transformer ratio in DC mode (dcUseTransformerRatio) (#181)
• Discard phase control if controlled branch is null or open (#177)