ModelingofGEwindturbine-generatorsforgridstudies.pdf
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ModelingofGEwindturbine-generatorsforgridstudies.pdf
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GeneralElectricInternational,Inc.OneRiverRoadSchenectady,NY12345USAModelingofGEWindTurbine-GeneratorsforGridStudiesPreparedby:
KaraClarkNicholasW.MillerJuanJ.Sanchez-GascaVersion4.5April16,2010iiLegalNoticeThisreportwaspreparedbyGeneralElectricInternational,Inc.(GEII)asanaccountofworksponsoredbyGEsWindEnergybusiness.NeitherWindEnergynorGEII,noranypersonactingonbehalfofeither:
1.Makesanywarrantyorrepresentation,expressedorimplied,withrespecttotheuseofanyinformationcontainedinthisreport,orthattheuseofanyinformation,apparatus,method,orprocessdisclosedinthereportmaynotinfringeprivatelyownedrights.2.Assumesanyliabilitieswithrespecttotheuseoforfordamageresultingfromtheuseofanyinformation,apparatus,method,orprocessdisclosedinthisreport.ForewordThisdocumentwaspreparedbyGEEnergyinSchenectady,NY.Technicalandcommercialquestionsandanycorrespondenceconcerningthisdocumentshouldbereferredto:
KaraClarkGEEnergyBuilding53-302A,OneRiverRoadSchenectady,NewYork12345Phone:
(518)385-5395E-mail:
iiiSummaryofChangesinVersion4.5UpdatedcurrentlimitsinLVPLandbothelectricalcontrolmodelsUpdatedDFAGandfullconverterreactivepowercontrolfigures,addednewdatatotableUpdatedDFAGandfullconverterelectricalcontrolfigures,addedtextdescribinginputtestsignalUpdatedWindFREEdescriptioninDFAGandfullconvertersectionsUpdatedAPCfrequencyresponsefigureandhighfrequencytrippingdiscussionUpdatedallbenchmarksimulationsSummaryofChangesinVersion4.4Additionoftextanddatarecommendationsformodeling1.6MWDFAGmachineAdditionofQdroopfunctiontofullconvertercontrolmodelAdditionofXc(compensatingimpedance)tofullconvertercontrolmodelSummaryofChangesinVersion4.3Clarificationonreactivecapability;voltageregulationrecommendedsettingsClarificationofturbinecontrolmodelingrecommendationsClarificationoffaultride-throughmodelingrecommendationsClarificationon2.5MWfullconvertermechanicalmodelAdditionofQdroopfunctiontoelectricalcontrolmodelforDFAGAdditionofWindINERTIATMfunctiontoturbinecontrolmodelSummaryofChangesinVersion4.2Revisedgenerator/convertermodelsourcecurrentcalculation,interfacewithnetworksolutionMovedlowvoltagepowerlogicfromelectricalcontroltogenerator/convertermodelUpdatedtext,figures,anddataasappropriatetoreflecttheabovechangesReranallDFAGandfullconvertertestsimulationsforSections6,7and8.SummaryofChangesinVersion4.1SimplifiedPLLingeneratormodel,addedlowvoltageactivecurrentregulationandreactivecurrentlimitstopreventexcessivevoltagetogeneratormodelModifiedconvertercurrentlimiterincontrolmodel,andXIQmax/XIQminlimitsRemovedLVRTvoltagesupportfunctionfromcontrolmodelUpdatedofficialnamesi.e.,WindVARbecameWindCONTROLUpdatedexamplesimulationsinSections6and7.AddedcomparisontoWindtrap.SummaryofChangesinVersion4.0Addedfullconvertermodelblockdiagrams,discussion,simulationresults,etcMovedgeneratorvoltageprotectiondiscussiontogeneratormodelsectionFolded“OtherTechnicalIssues”sectionintootherpartsofthereportModifiedPLLingeneratormodel.ModifiedturbinecontroltoincludeActivePowerControl.AddedfigureshowingdetailsofimprovedpitchcompensationinturbinemodelSummaryofChangesinVersions3.4,3.4a,3.4bCorrectionsregardingKqiandKviinSection4.2.2andTable4-5(version3.4b)AdjustmentofvaluesofperunitQmaxandunittransformerMVAandimpedancefor1.5MWWTG(version3.4a)Phase-lockedloopaddedtoconverter/generatormodel(version3.4)WindVaremulatormodelchangedtobeclosertorealcontrollogic(version3.4)Phaseangleregulationoptionaddedtoelectricalcontrol(version3.4)GeneratorprotectiontrippingmodeldescriptionupdatedandmovedtoSection4.4(version3.4)Recommendedparametervaluesupdatedbasedonlatestvalidationtesting(version3.4)ivRevisionHistoryVersion1.0December4,2002Version4.0September22,2006Version2.0March14,2003Version4.1March2008Version3.0October27,2003Version4.2June24,2008Version3.1December22,2003Version4.3April8,2009Version3.2May4,2004Version4.4September9,2009Version3.3June7,2004Version4.5April16,2010Version3.4December21,2004vTableofContents1INTRODUCTION.1.12MODELOVERVIEWANDPHILOSOPHY.2.12.1DOUBLY-FEDASYNCHRONOUSGENERATOR(DFAG)FUNDAMENTALS.2.12.2FULLCONVERTERWTGFUNDAMENTALS.2.32.3OVERALLMODELSTRUCTURE.2.43ANALYTICALAPPROACH.3.13.1LOADFLOWMODEL.3.13.2INITIALCONDITIONSFORDYNAMICSIMULATION.3.34DOUBLYFEDASYNCHRONOUSGENERATOR(DFAG)DYNAMICMODELS.4.14.1GENERATOR/CONVERTERMODEL.4.14.1.1FaultRideThrough.4.24.2CONVERTERCONTROLMODEL.4.64.2.1ReactivePowerControl.4.64.2.2ElectricalControl.4.94.2.3ControlStrategies.4.104.2.4OpenLoopControlLogic.4.114.3WINDTURBINEANDTURBINECONTROLMODEL.4.134.3.1TurbineControlModel.4.154.3.2RotorMechanicalModel.4.184.3.3WindPowerModel.4.204.3.4ActivePowerControlModel&RateLimitFunction.4.224.3.5WindINERTIAModel.4.255FULLCONVERTERWTGDYNAMICMODELS.5.15.1GENERATOR/CONVERTERMODEL.5.15.2ELECTRICAL(CONVERTER)CONTROLMODEL.5.25.3WINDTURBINEANDTURBINECONTROLMODEL.5.66DFAGWTGBENCHMARKSIMULATIONS.6.16.1TESTSYSTEM.6.16.2DFAGWTGBENCHMARKSIMULATIONRESULTS.6.26.2.1FaultResponsewithWindCONTROLEmulator.6.36.2.2QDroopFunctionPerformance.6.66.2.3ActivePowerControlandPowerResponseRateLimitPerformance.6.86.2.4WindSpeedProfile.6.106.2.5ZeroPower(WindFREE)Operation.6.106.2.6WindINERTIAControlPerformance.6.136.3DFAGWTGBENCHMARKSIMULATIONDYNAMICDATA.6.157FULLCONVERTERWTGBENCHMARKSIMULATIONS.7.17.1TESTSYSTEM.7.17.2FULLCONVERTERWTGBENCHMARKSIMULATIONRESULTS.7.17.2.1FaultResponsewithWindCONTROLEmulator.7.27.2.2Zero-PowerOperation.7.57.2.3ConverterCurrentLimitPerformance.7.97.2.4LowVoltagePowerLogicPerformance.7.117.2.5DynamicBrakingResistorPerformance.7.117.3FULLCONVERTERWTGBENCHMARKSIMULATIONDYNAMICDATA.7.138PSLFMODELVALIDATION.8.1vi8.11.5MWDFAGCOMPARISONTOWINDTRAP.8.18.22.5MWFULLCONVERTERCOMPARISONTOWINDTRAP.8.48.3WINDINERTIAMODELCOMPARISONTOFIELDMEASUREMENTS.8.69CONCLUSIONS.9.1viiTableofFiguresFigure2-1.GEDoublyFedAsynchronousWTGMajorComponents.2.1Figure2-2.GEFullConverterWTGMajorComponents.2.3Figure2-3.GEWTGDynamicModelConnectivity.2.5Figure3-1.SimplifiedWindPlantPowerFlowModel.3.2Figure4-1.DFAGGenerator/ConverterModel.4.2Figure4-2GE1.5and1.6MWZVRTModelSettingsandEquipmentSpecification.4.4Figure4-3GE1.5and1.6MWLVRTIIModelSettingsandEquipmentSpecification.4.5Figure4-4.OverallDFAGReactivePowerandElectricalControlModel.4.6Figure4-5.ReactivePowerControlModel.4.7Figure4-6.QDroopFunctionModel.4.9Figure4-7.DFAGElectricalControlModel.4.10Figure4-8.WindTurbineModelBlockDiagram.4.15Figure4-9.PitchControlandPitchCompensationBlockDiagram.4.16Figure4-10.Two-MassRotorModel.4.19Figure4-11.WindPowerCpCurves.4.21Figure4-12.ActivePowerControlEmulator.4.23Figure4-13.ExampleFrequencyResponseCurve.4.24Figure4-14.SimplifiedWindINERTIAControlModel.4.27Figure5-1.FullConverterWTGGenerator/ConverterModel.5.1Figure5-2.FullConverterWTGElectricalControlModel.5.4Figure5-3.ConverterCurrentLimitModel.5.5Figure6-1.PrimaryDFAGTestSystem.6.1Figure6-2.SeriesofBusFaultswithVariousFaultImpedances.6.4Figure6-3.3-phaseFaulttoGround,ClearedbyTripping230kVLine.6.5Figure6-4.QDroopResponsetoCapacitorSwitching.6.7Figure6-5.ActivePowerControlResponsetoLossofLoad.6.9Figure6-6.ResponsetoWindSpeedProfilewithoutZeroPowerOperation.6.11Figure6-7.ResponsetoWindSpeedProfilewithZeroPowerOperation.6.12Figure6-8.ResponsetoFrequencySignalwithWindINERTIA.6.14Figure7-1.SeriesofBusFaultswithVariousFaultImpedances.7.3Figure7-2.3-phaseFaulttoGround,ClearedbyTripping230kVLine.7.4Figure7-3.IncreasingWindSpeedResultsinZero-PowerOperation.7.6Figure7-4.ResponsetoWindSpeedProfilewithZeroPowerOperation.7.7Figure7-5.VoltageRegulationinContinuousZero-PowerOperation.7.8Figure7-6.StepReductioninConverterCurrentLimitwithPPriority.7.10Figure7-7.LowVoltagePowerLogicResponsetoFaultonPOIBus.7.12Figure8-1.TestSystemforPSLFandWindtrapComparison.8.1Figure8-2.1.5MWDFAGPSLFandWindtrapTerminalVoltageResponse.8.2Figure8-3.1.5MWDFAGPSLFandWindtrapRealPowerResponse.8.3Figure8-4.1.5MWDFAGPSLFandWindtrapReactivePowerResponse.8.3Figure8-5.2.5MWFullConverterPSLFandWindtrapTerminalVoltageResponse.8.4Figure8-6.2.5MWFullConverterPSLFandWindtrapRealPowerResponse.8.5Figure8-7.2.5MWFullConverterPSLFandWindtrapReactivePowerResponse.8.5Figure8-8.FrequencyTestSignal.8.6Figure8-9.WindINERTIAModelPerformanceandFieldMeasurements.8.7viiiixTableofTablesTable3-1.IndividualWTGPowerFlowData.3.2Table4-1.TypicalFaultRideThroughVoltageThresholdsandDurations.4.4Table4-2.DFAGGenerator/ConverterParameters.4.5Table4-3.ReactivePowerControlParameters(onGeneratorMVABase).4.8Table4-4.QDroopFunctionParameters.4.9Table4-5.DFAGElectricalControlParameters.4.10Table4-6.OpenLoopReactivePowerControlLogic.4.12Table4-7.OpenLoopReactivePowerControlParameters.4.12Table4-8.DFAGWTGTurbineControlParameters(onTurbineMWBase).4.18Table4-9.DFAGWTGRotorMechanicalModelParameters(onTurbineMWBase).4.19Table4-10.DFAGWTGWindPowerCoefficients.4.20Table4-11.CpCoefficientsi,j.4.22Table4-12.ActivePowerControlandRateLimitF
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