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1、第44卷第504期电测与仪表Vol.44No.5042007年第12期ElectricalMeasurement&InstrumentationDec.2007-1-第44卷第504期电测与仪表Vol.44No.5042007年第12期ElectricalMeasurement&InstrumentationDec.2007基于主动响应负荷电压调节的预防控制策略*何裕强,王冲,周海强,鞠平(河海大学能源与电气学院,南京210098)摘要:特高压交直流输电和可再生能源发电的增加使得电力系统复杂程度加深,特别是特高压
2、直流输电的容量巨大,一旦发生直流闭锁故障,受端电网功率发生严重缺额,将给电网的安全稳定运行带来巨大冲击,常规处理措施则会切除大量负荷,造成重大经济损失。而采取适当的措施进行预防控制则可以增加电网的稳定裕度,减轻发生故障时电网的压力。文章基于主动响应负荷的分类定义,根据电压响应型负荷的ZIP模型说明其电压特性,然后通过OLTC调压手段,结合负荷主动响应的特性,提出基于主动响应负荷电压调节的预防控制策略,提高静态电压值,从而可以有效的降低事故发生的可能,并在发生事故后,提高暂态电压裕度,从而减少需要切除负荷的量。在河
3、南算例中的仿真结果表明了该策略的有效性。DOI:关键词:预防控制;ZIP模型;CVR;OLTC;暂态电压稳定裕度中图分类号:TM933文献标识码:B文章编号:1001-1390(2019)10-0000-00PreventivecontrolstrategybasedonactiveresponseloadvoltageregulationHeYuqiang,WangChong,ZhouHaiqiang,JuPing(CollageSchoolofEnergyandElectricity,HohaiUnivers
4、ity,Nanjing210098,China)Abstract:TheincreaseofUHVDC/ACandrenewableenergypowergenerationmakesthepowersystemmorecomplex.Especially,thecapacityofUHVDCtransmissionishuge.,OnceoncetheDClockoutaccidenthappens,andthepowerofthereceivingendwillbeseriouslydeficient,whi
5、chwillbringgreatimpactonthesafeandstableoperationofthepowergrid.Conventionaltreatmentmeasurewillremovealotofload,whichwillresultingreateconomicloss.Properpreventivecontrolmeasurescanincreasethestabilitymarginofpowergridandreducethepressureofpowergridwhenfault
6、soccur.Basedonthedefinitionofactiveresponseloadclassification,athevoltagecharacteristicaredescribedaccordingtoresponsiveloadZIPmodelofvoltageresponsiveloadisestablished.BymeansofOLTCvoltageregulationandcombiningwiththecharacteristicsofloadactiveresponse,thepr
7、eventivecontrolstrategybasedonactiveresponseloadvoltageregulationisproposed,whichcaneffectivelyimprovethestaticvoltagevaluethatwhichcanreducetheprobabilityofaccidentandimprovethetransientvoltagemarginafteraccidentsthatcanreducetheproportionofloadtoberemovedaf
8、tertheaccident.ThesimulationresultsinaHenanexampleshowtheeffectivenessoftheproposedstrategy.Keywords:preventivecontrol,ZIPmodel,CVR,OLTC,transientvoltagestabilitymargin-1-第44卷第504期电测与仪表Vo