v1.4.0

Release notes

Features

• Substation automation system (#811)
• Voltage angle limit support (#873)
• Zip and exponential load models (#846)
• Secondary voltage control, coupled version (#872)
• DC approximation type configuration (#878)
• Refactor propagated contingency (#888)
• Exclude generators below zero or negative minP from slack distribution (#868)
• Synthetic discarded transformer voltage control log (#866)
• Option to ignore active power limits in slack distribution on generators (#869)
• Parent 16: update liquibase maven plugin (#860)
• Convergence control parameters as olf parameters (#876)
• New way to per unit lines (#852)
• Added voltage magnitude and angle to SecurityAnalysis branch results extension (#875)
• Bump to core version 6.0.2 (#881, #897)
• Improve factors read performance (#891)
• Slack Distribution Failure behavior (#890)

Fixes

• Fix three windings transformer with disconnected leg monitoring (#855)
• Fix cache invalidation issue when updating network state (#867)
• Fix fast restart network update in case of multiple components (#870)
• Fix reporting of distributed slack active power (#871)
• Add missing parameters infos (#877)
• Fix PTC action support and support of RTC action (#862)
• Fix remote reactive power control: reactive limits and update generator's reactive power (#882)
• Make constructor public for OlfThreeWindingsTransformerResult like for OlfBranchResult instead of package private. (#884)
• Fix sensi on disconnected HVDC (#886)
• Fix missing voltage limit violations (#892)
• Fix SA modifying OLF parameters (#893)
• Fix AC SA results ignoring AcLoadFlow outerloop status (#894)
• Fix incremental outer loops (#879)
• Fix not same variable and equation issue (#625)

Quality

• Javadoc fix: Add literal annotation in author's email address (#887)

v1.3.0

Release notes

• Add parameter to set the min nominal voltage for target voltage check (#795)
• Fix zero impedance branch flows in presence of shunt compensators (#797)
• Network update: wrong load Q0 when loadPowerFactorConstant is true and P0 equals zero (#798)
• Exception: No more participating to slack distribution (#799)
• Fix power factor constant with conform loads (#800)
• Secondary voltage control: add voltage sensi epsilon parameter (#796)
• Bump to core 5.3.2 (#804)
• Clean indexed terms when removing an equation (#808)
• Fix already converged case in fast restart mode (#802)
• Fix switch update in fast mode (#803)
• LfLoad refactoring (#812)
• Fix updated Q limits in reactiveLimitsOuterLoop (#813)
• Fix generators update after forcing a bus to remain PV (#814)
• Fix calculated bus load targetQ when distributed slack on loads with constant power factor (#815)
• Fix contingency on phase shifter controlled branch causing exception (#817)
• Fixed PST Flow Regulation on non impedant branch causing exception (#816)
• Use DC context in DC sensi (#821)
• DC PST active power control (#770)
• Improve sensi replay results (#823)
• Refactor sensi test package (#827)
• Fix dcUseTransformerRatio not taken into account in DC sensitivity analysis (#824)
• Fix too large dense matrix allocation issue (#822)
• Clean/fix phase control parameter in DC computations (#833)
• Get slack bus from network in sensitivity analysis (#825)
• Fix branch state saving and restore (#826)
• Improve performance of reference flow calculation in a DC sensi analysis (#829)
• Fix NPE in remote reactive power control (#835)
• Disabled network refactoring (#839)
• Do not update state after UNSTABLE outer loop status (#834)
• Fix small reference flow values instead of strict zero (#828)
• Support of BusContingency (#711)
• BusResults after security analysis is not exhaustive (#603)
• Empty list instead of null for bbsIds (and make final). (#842)
• Implement sensi of a target voltage to a reactive power flow and current (#830)
• Fix voltage control hidden to disabled (#810)
• Support of BranchResult for dangling line (#844)
• Fix all voltage control outer loops (#840)
• Generator reactive power dispatch proportional to normalized power (#843)
• LF load refactoring (#845)
• Upgrade to PowSyBl core 6.0.0-RC1 (#850)
• Explicit outer loops configuration (#841)
• Use dense matrix factory everywhere in tests (#851)
• Full Sonar analysis (#847)
• Reduce the number of zero reactive key log error (#853)
• Bump to powsybl-parent 15 (#854)
• Add a IEEE 14 unit test (#857)
• Add log to reactive limit outer loop when limit has changed (#856)
• Fix invalid factors in specific contingency context (#837)
• Support of PhaseTapChangerTapPositionAction for 3wt (#849)
• Network update fix in case of fast restart (#861)
• Improve secondary voltage control outer loop (#838)
• Bump powsybl-core to 6.0.0 (#864)

Compatibility

• PowSyBl Open Load Flow now only supports Java 17 and higher (#820)

CI

• Add a new branch name pattern for full Sonar analyses (#819)

Utilities

• Add Maven Wrapper (#831)

v1.2.3

Release notes

Bump to powsybl-core 5.3.2 (#804)

Fixes

• Clean indexed terms when removing an equation (#808)
• Fix already converged case in fast restart mode (#802)
• Fix switch update in fast mode (#803)
• Fix updated Q limits in reactiveLimitsOuterLoop (#813)
• Fix generators update after forcing a bus to remain PV (#814)
• Fix calculated bus load targetQ when distributed slack on loads with constant power factor (#815)
• Fix contingency on phase shifter controlled branch causing exception (#817)
• Fix phase shifter flow control on non impedant branch causing exception (#816)

Quality

• LfLoad refactoring (#812)

v1.2.2

Release notes

Features

• Secondary voltage control: add voltage sensi epsilon parameter (#796)

Fixes

• Fix power factor constant with conform loads (#800)
• Exception: No more <elementType> participating to slack distribution (#799)
• Network update: wrong load Q0 when loadPowerFactorConstant is true and P0 equals zero (#798)
• Fix zero impedance branch flows in presence of shunt compensators (#797)

v1.2.1

Release notes

• Add parameter to set the min nominal voltage for target voltage check (#795)

v1.2.0

Release notes

• Upgrade to PowSyBl Core 5.3.0 (#793)

Features

• Basic implementation of asymmetric AC load flow (#703)
• Increase default value for max realistic voltage magnitude (#769)

Fixes

• Improve propagating by dealing with internal connections (#774)
• Fix infinity voltage shift in secondary voltage control outer loop (#782)
• Fix update of voltage controls after bus disabling (#787)
• Fix slackBusesIds parameter type (#786)
• Fix isHidden() method and introduce isDisabledAndAlsoAllItsDependentVoltageControls() method (#784)
• Fix voltage control equation system updater: only main voltage control (#785)
• Fix update voltage control merge status (#783)
• Fix remove equation (#779)
• Fix pre contingency monitored branch empty in DC Security analysis. (#776)
• Fix disabled voltage control equations (#772)
• Fix no impact load contingency when simulated with a switch contingency (#768)

Refactoring

• Refactor outer loop (#789)
• Refactor equation derivative (#746)
• Rename LfAggregatedLoads to LfLoad (#777)
• Replace dc boolean by an enum (#773)

Quality

• Add unit test for limit violation detection (#792)
• Add countries to balance unit test (#791)
• Test Metrix for violations in Current, Voltage, Active and Apparent Power (#650)

v1.1.1

Release notes

• Upgrade to PowSyBl Core 5.2.1 (#771)
• Fix no impact load contingency when simulated with a switch contingency (#768)

v1.1.0

Release notes

• Upgrade to PowSyBl Core 5.2.0 (#725, #742, #754, #764)

Features

Common

• Improve equations testing (#720)
• Newton Raphson new stopping criteria (#699)
• Improve GraphViz voltage control representation (#734)
• Network listener tracer (#733)
• Incremental phase shifter outer loop (#722)
• Log all parameters formatted as a table (#749)
• New parameter to always update iIDM network even in case of non-convergence (#755)
• Split NR and outer loops max iterations (#730)
• Add most meshed slack bus max nominal voltage percentile parameter (#761)
• Country filter for slack bus selection (#721)

Load flow fast restart for AI

• Fast switch position modification (#705)

Security analysis

• Use reader/writer API instead of the result object based one (#719)
• Partial support of GeneratorAction (#704)
• Support of static var compensator contingency (#748)
• Partial support of HvdcAction (#744)
• Support of busbar section contingency (#667)

Sensitivity analysis

• Support of static var compensator contingency (#748)
• Sensitivity values filtering (#757)
• Support of busbar section contingency (#667)

Refactoring

• Refactor PI model array (#712)
• Remove updateAllowedDirection method duplication (#723)
• Refactor voltage controls (#735)
• Angle in degree in LfBus (#739)
• Refactor parameters (#750)
• Refactor voltage control equations (#751)
• Use SensitivityFunctionType::getSide and SensitivityVariableType::getSide (#752)
• Avoid useless peruniting/de-peruniting (#760)
• Various performance improvements (#745)

Fixes

• Fix zero impedance subgraph and refactor voltage controls (#718)
• Remove AssertionError (#716)
• Fix ac and outerloop package design (#729)
• Fix sensitivity calculation (#731)
• Fix missing DC context close (#732)
• Fix breakers in PropagatedContingency list creation (#726)
• Fix hvdc converter stations update for fast restart (#736)
• Fix hvdc line open at one side (#738)
• Fix non impedant phase shifter with active power flow control activated (#641)
• Fix (or simplify) load action support (#741)
• Fix secondary voltage control when branch disconnected at one side (#747)
• Shunt voltage control: fixes after testing on real cases (#753)
• Fix contingency on line disconnected at one side (#756)
• ReactiveLimitsMaxPqPvSwitch parameter name lowerCamelCase (#758)
• Only use branches connected at both sides in most meshed slack bus selection (#762)
• Add limit name to violation (#737)

v1.0.1

Release notes

• Fix weak refs with network store IIDM (#727)
• Change default value for max Pq Pv switch and add a parameter (#728)
• Fix i2 derivative to a1 (#724)

v1.0.0

Release notes

We are happy to release the 1.0.0 version! 🚀

Features

• Bump powsybl-core to 5.1.0 (#670, #714)
  • Populate ConnectivityResult in SA post contingency results (#701)
  • Support of new BalanceType PROPORTIONAL_TO_GENERATION_PARTICIPATION_FACTOR and PROPORTIONAL_TO_GENERATION_REMAINING_MARGIN (#702)
  • Support NaN droop for slack distribution (#700)

LoadFlow

• Remove add ratio to lines with different nominal voltage parameter (#658)
• Low impedance threshold into OLF parameters (#656)
• Fast restart from previous LF for AI use cases with fast generator targetV modification (#635)
• Newton-Raphson state vector scaling (#669)
• Fast restart: support of shunt section modification (#698)
• Specific parameters description (#689)
• Add unrealistics voltages trace logs (#665)
• Add target dead band check in transformer voltage control outerloop (AFTER_GENERATOR_VOLTAGE_CONTROL) (#668)
• SVC with stand by automaton (#636)
• Multiple slack buses support (#679)
• GraphViz export for identifying the spanning tree and the controlled buses (#706)
  
• Shunt incremental voltage control (#692)
• Secondary voltage control simulation (#695)

Security analysis

• Adds DcLoadFlowContext (#647)
• Support of operator strategies in DC security analysis (#662)
• Support of LoadAction in AC and DC security analysis (#660)

Sensitivity analysis

• Get RHS from equation (#673)
• Support of three windings transformers as variable or function in sensitivity analysis (#654)

Refactoring

• Refactor security analysis network loading (#659)
• Refactor equation systems creation (#684)
• Refactor PV -> PQ switch counter (#687)
• Refactor default outer loop config (#708)
• Transformer voltage control refactoring (#709)
• Simplify sensitivity calculation on transformer voltage control incremental outer loop (#696)
• Add AbstractElementEquationTerm (#686)
• Move bus getters to Networks utility class (#678)
• Update deprecated API usage (#697)
• Automatic indexing of equation terms (#672)
• Use LfNetworkParameters everywhere to simplify code (#682)
• Zero impedance branch management refactoring (#666)
• DcValueVoltageInitializer fails in presence of resistive only branches (#683)
• Add network update state parameters (#681)

Fixes

• Fix log: generator with inconsistent target (#661)
• Fix DcEquationSystem with disabled non impedant branch (#663)
• Fix calculation status report severity (#677)
• Fix log message with voltage controllers (#694)
• Fix incremental transformer voltage control loop (#693)
• Fix deprecated API usage (#707)
• Fix shunt compensator disabling in DC security analysis (#710)
• Fix variable name (#713)