风储联合系统运行特性与控制策略分析

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1、SOC水平控制，使采用等同于风场容量10%的储能电池能够完成持续平抑风电场出力波动的工作；3、提出了一种风储协调惯量响应控制方法。针对风场提供惯量响应支撑系统频率时易受风机运行工作点限制的问题，分析了储能虚拟惯量补偿的原理及配置容量，利用风储协调惯量控制实现在保证风场运行安全性和经济性的前提下起到暂态支撑作用；4、分析了风电并网后带来的接入点电压和功率因数波动问题，提出了一种以储能为主、风场为辅的风储协调无功控制策略，讨论了同时考虑无功控制和有功平滑时储能变流器的容量配置。5、将上述控制策略应用于某风储示范工程建设中。在含有2MW大容量储能电池的风电场中进行了现

2、场试运行调试，实测数据验证了所提策略的实际可行有效性。关键词：风储协调，风功率平滑，惯量响应，无功电压控制ResearchOnPerformanceCharacteristicsAndControlStrategyOfWind-StorageSystemABSTRACTWindpowerisawidelyusedgreenrenewableenergyintheworldandhasdevelopedrapidlyinChinaatrecentyears.However,duetotherandomness,volatilityandintermittency,

3、whicharethesubstantivecharacteristicsofwind,large-scaleintegrationhasanadverseimpactonsafeandstableoperationofgrid・Oneoftheeffectivesolutionsistoconfigurebatteryenergystoragesystemforwindfarms.Asaresult,concerningresearchonstoragecapacityandwind-storagecombinationcontrolhasbecomeahot

4、spot.Astheexpensivecostandshortlife,mostofthetimesmallscaleofstoragesystemisusedtosmoothwindpowerfluctuations,whichbringschallengestocontrolstrategyofbatteries・Inthisarticle,researchisbasedonarealmedium-sizedwindfarm,focusingonusinglithium-ionbatterysystemtosmoothoutputpowerfluctuati

5、onsoftheall-DFIGwindfarmandvirtualinertiacompensationstrategyfortransientsupportongrid,also,reactivepower/voltagecontrolonPCCisimplementedatthesametime.Achievementsaremainlyfromthefollowingrespects:Atfirstdynamicmodelsofthedouble-fedinductiongeneratorandlithiumionbatteryarcbuiltasaba

6、sisofsimulation.ThenanalysethecharacteristicsofwindfarmoriginalpoweroutputandcontrolstrategycombinedbatterySOCcontrolandfirst-orderlow-passfilteringalgorithmforsmoothingoutputfluctuationsispresented,whichmanagestopreventexcessivecharging/dischargingwhenpowerchangeislimitedundersustai

7、nedwindsinthecapacityconfigurationofbatterysystemequalsto10%ofwindfarmratedpowe匚Thenwind-storagecoordinatedcontrolstrategyoninertiaresponseisdiscussed・ResponseexcitedbyrotorkineticenergycontrolonDFIGisprovedtobeabletosuppresstransientfrequencydisturbance・However,performanceislimitedb

8、yoperationpo