基于储能惯量支撑的受端电网频率优化控制方法
文档名：基于储能惯量支撑的受端电网频率优化控制方法
摘要：针对大规模可再生能源的接入,导致受端电网的等效惯量和调频能力不断降低,严重影响受端系统频率稳定的问题,该文提出考虑储能支撑的受端电网频率稳定优化控制方法.首先,分析受端电网下多源储能频率响应特性;其次,分析基于多源储能的多能源能量协调与频率变化的关系,建立考虑多能源储能支撑的频率支撑特性模型,并对基于多能源协调对受端电网频率响应等值模型进行修正;再次,建立以受端电网频率变化速度指标和频率跌落指标两方面作为频率稳定指标,并提出基于多源储能支撑的受端电网频率稳定优化控制方法;最后,以某实际受端电网为算例建立仿真模型,算例结果验证了该模型的有效性,基于多能源储能支撑可提高受端电网的频率稳定性能.
Abstract：Inviewoftheproblemthattheequivalentinertiaandfrequencymodulationcapabilityofthereceivingpowergridareconstantlyreducedduetolarge-scalerenewableenergyaccess,andthefrequencystabilityofthereceivingpowergridisseriouslyaffected,thispaperproposesanoptimalcontrolmethodforfrequencystabilityofthereceivingpowergridconsideringenergystoragesupport.Firstly,thefrequencyresponsecharacteristicsofmulti-sourceenergystorageinthereceivingpowergridareanalyzed.Secondly,therelationshipbetweenmulti-energyenergycoordinationandfrequencychangebasedonmulti-sourceenergystorageisanalyzed,afrequencysupportcharacteristicmodelconsideringmulti-energyenergystoragesup-portisestablished,andtheequivalentmodelofthefrequencyresponseofthereceiving-endpowergridbasedonmulti-energycoordinationismodified.Then,thefrequencychangespeedindexandfrequencydropindexofthereceivingpowergridareestablishedasthefrequencystabilityindex,andanoptimalcontrolmethodforfrequencystabilityofthereceiving-endpowergridbasedonmulti-sourceenergystoragesupportisproposed.Finally,asimulationmodelisestablishedbytakinganactualreceiving-endpowergridasanexample.Theresultsoftheexampleverifythevalidityofthemodelinthispaper.Basedonthemulti-energyenergystoragesupport,thefrequencystabilityperformanceofthereceiving-endpowergridcanbeimproved.Theinnovationsofthispaperareasfollows:(1)Inthispaper,theresponsecharacteristicsofmulti-sourceenergystorageequipmenttofrequencythroughvirtualinertiacontrolareanalyzed,andthefrequencycontrolmodelofmulti-sourceenergystorageinertiasupportisestablished.(2)Theinternalresponseconsiderstheresponseoftheprimemoverandthegovernorwhentheactivepoweradjustmentisconsidered,andtheexternalresponseisequivalentusingtheparameteridentificationmethod.Onthisbasis,afrequencyresponsemodelofreceiving-endpowergridconsideringmulti-sourceenergystoragesupportisestablished.(3)Takingthefrequencychangespeedindexandfrequencydropindexofthereceiving-endpowergridasthefrequencystabilityindex,thefrequencystabilityoptimizationcontrolmethodofthereceiving-endpowergridbasedonmulti-sourceenergystoragesupportisproposed.Animprovedquantumparticleswarmoptimizationalgorithmisproposedtosolvethefrequencystabilitycontrolofthereceiving-endpowergrid.Finally,thesimulationmodelisestablishedbytakingtheactualreceiving-endpowergridinEastChinaasanexample.Theresultsoftheexampleverifytheeffectivenessofthemodelinthispaper.Thefollowingconclusionscanbedrawnfromthesimulationanalysis:(1)Thecharacteristicsofmulti-energystorageinthereceiving-endpowergridareanalyzed,andthefrequencycontrolresponsemodelsofelectricvehicles,P2H,P2Gequipmentandelectricvehiclesareanalyzed.(2)Thesupportcharacteristicsofthesystembasedonmulti-energyenergycoordinationandmulti-sourceenergystorageareanalyzed.Thefrequencyresponsemodelofthereceiving-endpowergridconsideringmulti-sourceenergystorageisproposed,andthefrequencystabilityoptimizationcontrolmodelofmulti-sourceenergystorageisestablished.(3)Afrequencystabilityindexisestablished,whichiscomposedofthefrequencychangespeedindexandthefrequencydropindexofthereceivingpowergrid,andthevirtualinertiacontrolofmulti-sourceenergystorageisusedforfrequencyregulation.Thesimulationresultsshowthatthemodelcaneffectivelyimprovethefrequencycharacteristicsofthereceivingendpowergrid,andtheproposedfrequencyresponsemodelhashighaccuracy.(4)Thefrequencymodulationoptimizationcontrolmethodbasedonmulti-sourceenergystorageinthispapercanmakefulluseoftherotorkineticenergy,reasonablyadjustthesysteminertia,andimprovethefrequencymodulationabilityofthereceivingendsystem.
作者：张怡静 李智 时艳强 丁浩寅 张文朝 Author：ZhangYijing LiZhi ShiYanqiang DingHaoyin ZhangWenchao
作者单位：国家电网有限公司华东分部上海200120北京科东电力控制系统有限责任公司北京100089
刊名：电工技术学报 ISTICEIPKU
Journal：TransactionsofChinaElectrotechnicalSociety
年，卷(期)：2024, 39(11)
分类号：TM614
关键词：储能受端电网频率稳定优化控制
Keywords：Energystoragereceivingendgridfrequencystabilityoptimalcontrol
机标分类号：TM71TN929.5TM312
在线出版日期：2024年6月18日
基金项目：国家电网公司科技项目基于储能惯量支撑的受端电网频率优化控制方法[
期刊论文]电工技术学报--2024, 39(11)张怡静李智时艳强丁浩寅张文朝针对大规模可再生能源的接入,导致受端电网的等效惯量和调频能力不断降低,严重影响受端系统频率稳定的问题,该文提出考虑储能支撑的受端电网频率稳定优化控制方法.首先,分析受端电网下多源储能频率响应特性;其次,分析基...参考文献和引证文献
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