42上海电气技术2023,16(2)并离网无缝切换储能系统的控制张霞上海电气集团股份有限公司中央研究院摘要:研究并离网无缝切换储能系统的控制方法,以提高储能系统的电网适应性,使储能系统接入电网更加安全、可靠。引入虚拟同步发电机控制技术和静态开关装置,建立并离网无缝切换储能系统。通过对虚拟同步发电机控制技术进行分析,使储能系统能够模拟同步发电机的外特性,实现惯性模拟和调频调压功能。进行并离网无缝切换储能系统试验,结果表明,通过虚拟同步发电机控制技术及静态开关装置,储能系统并离网切换时不需要变换控制策略,可以实现无缝切换,具有友好的并网能力。关键词:并网;离网;切换;储能系统;控制中图分类号:TK02文献标志码:AAbstract:Thecontrolmethodforenergystoragesystemwithseamlessswitchingbetweenon-gridandoff-grid,inordertoimprovetheadaptabilityofenergystoragesystemtothegridandmakeitsaferandmorereliabletoconnectenergystoragesystemtothegrid.Virtualsynchronousgeneratorcontroltechnologyandstaticswitchingdevicewereintroducedtoestablishenergystoragesystemwithseamlessswitchingbetweenon-gridandoff-grid.Byanalyzingthecontroltechnologyofvirtualsynchronousgenerator,theenergystoragesystemcansimulatetheexternalcharacteristicsofvirtualsynchronousgenerator,achieveinertialsimulationandfrequencyregulationandvoltageregulationfunctions.Throughconductingexperimentforenergystoragesystemwithseamlessswitchingbetweenon-gridandoff-grid,theresultshowsthattheenergystoragesystemdoesnotneedtochangecontrolstrategyduringswitchingbetweenon-gridandoff-gridthroughvirtualsynchronousgeneratorandstaticswitchingdevice,andcanachievedseamlessswitchingwithfriendlygridconnectioncapability.Keywords:GridConnection;OffGrid;Switching;EnergyStorageSystem;Control完上海2200070文章编号:1674-540X(2023)02-042-06优良特性,该储能系统将静态开关置于并网变流器1研究背景和电网之间,当电网发生故障或储能系统需要独立储能系统在电网运行过程中可以实现对电能的运行时,静态开关自动断开并网变流器和主电网,当存储、释放及削峰填谷等作用。由于电力电子装置电网供电恢复正常或根据情况需要储能并网时,也响应速度快、惯性小,常规储能并网变流器响应速度能自动实现将该储能...