第42卷第1期2023年1月ZhejiangElectricPowerVol.42,No.01Jan.25.2023直流侧直挂储能拓扑结构及控制策略研究陆海洋,王翀,任铁强,马秀达,卢宇,董云龙,邹强(南京南瑞继保电气有限公司,南京211100)摘要:电压源换流器直流侧直挂储能可应用于有源或者无源的电网系统中,具有削峰填谷、减少新能源的弃风、弃光等优点。针对电压源换流器直流侧直挂储能的拓扑结构,首先介绍了直流侧储能的基本工作原理,提出了极控制层定直流电压控制和定直流电流控制两种控制方式;接着考虑到这两种控制方式均采用子模块数量前馈控制,提出了直流电压开环控制;最后搭建RTDS(实时数字仿真系统)并进行了稳态、动态和控制方式切换试验。结果表明,采用该拓扑结构的直流侧储能具有良好的稳态运行及动态电压、电流响应特性,具备一定的应用与推广价值。关键词:直流侧储能;直流电压控制;直流电流控制;阶跃响应;控制方式切换DOI:10.19585/j.zjdl.202301005开放科学(资源服务)标识码(OSID):Researchontopologystructureandcontrolstrategyofdirect-hangingenergystorageontheDCsideLUHaiyang,WANGChong,RENTieqiang,MAXiuda,LUYu,DONGYunlong,ZOUQiang(NRElectricCo.,Ltd.,Nanjing211100,China)Abstract:Direct-hangedenergystorageofvoltagesourceconverters(VSCs)ontheDCsidecanbeappliedtoactiveorreactivepowergrids.Ithastheadvantagesofpeakshavingandvalleyfilling,reducingwindandphotovoltaicpowercurtailment.GiventhetopologyofDC-sidedirect-hangingenergystorageofVSCs,thebasicworkingprin⁃cipleofDC-sideenergystorageisintroducedfirst.Twocontrolmethodsareproposed:constantDCvoltagecontrolandconstantDCcontrolatthepolecontrollevel.Moreover,DCvoltageopen-loopcontrolisproposedsincebothmethodsadoptfeed-forwardcontrolofsub-modulequantity.Finally,anRTDS(real-timedigitalsimulationsystem)isestablished,andsteady-state,dynamic,andcontrolmodeswitchingtestsarecarriedout.TheresultsshowthattheDC-sideenergystoragewithsuchtopologyischaracterizedbyitssuperiorsteady-stateoperation,dynamicvolt⁃age,andcurrentresponsecharacteristicsandhasaparticularapplicationandpromotionvalue.Keywords:DC-sideenergystorage;DCvoltagecontrol;DCcurrentcontrol;stepresponse;controlmodeswit...