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时间:2020-03-28
《高压直流输电换相失败对交流线路保护的影响(一)含直流馈入的山东电网EMTDC建模与仿真.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第39卷第24期电力系统保护与控制V_01.39No.242011年12月l6日PowerSystemProtectionandControlDec.16,2011高压直流输电换相失败对交流线路保护的影响(一)含直流馈入的山东电网EMTDC建模与仿真于占勋,朱倩茹,赵成勇,张汝莲,卫鹏杰(1.山东省电力调度中心,山东济南250001;2.电力系统保护与动态安全监控教育部重点实验室(华北电力大学),河北保定071003)摘要:宁东一山东直流输电工程的投运将对山东电网的安全稳定运行带来挑战,交直流系统的相互作用研究尤显重要。在
2、PSCAD环境下,对山东电网进行了电磁暂态仿真建模,包括交流系统的等值简化建模和宁东直流系统的详细建模。对直流输电系统的静态响应特性和常见故障时暂态响应特性进行仿真分析,结果表明直流输电控制系统具有快速稳定的响应特性,验证了所建模型的正确性和有效性。并对整个山东电网的潮流分布和主要变电站母线短路电流大小进行调节和校核,使之与PSASP环境下的数据基本一致,保证了所建模型的稳态和动态特性与实际电网基本相同。关键词:高压直流输电;PSCAD/EMTDC;电磁暂态模型;静态响应特性;故障暂态响应特性;潮流分布;短路电流Study
3、oninfluenceofHVDCcommutationfailureonAClineprotectionPartone:modelingandsimulationofShandongGridwithDCfeed—insystembasedonEMTDCYUZban.xun,ZHUQian.ru,ZHAOCheng.yong2,ZHANGRu.1ian,WEIPeng~ie(1.ShandongPowerDispatchingCenter,Jinan250001,China;2.KeyLaboratoryofPowerSy
4、stemProtectionandDynamicSecurityMonitoringandControl(NorthChinaElectricPowerUniversity),MinistryofEducation,Banding071003,China)Abstract:Ningdong-ShandongHVDCprojectwillbeputintooperation,whichisachallengetothesecurityandstabilityofShandongpowergrid,SOitbecomesmor
5、eimportanttoresearchAC-DCsysteminteraction.InPSCADenvironment,theelectromagnetictransientsimulationmodelofShandongpowergridisestablished,includingthesimplifiedmodelingofShandongACsystemandthedetailmodelingofNingdongHVDCsy~em.BasedontheDCmodel,thestaticresponsescha
6、racteristicsandtransientresponsecharacteristicsundercommonfaultsofDCtransmissionsystemaresimulatedandanalyzed.ThesimulationresultsshowthatcontrolsystemofFIVDCtransmissionsystemhassteadyandfastresl:Ionsecharacteristicsandalsoverifythecorrectnessandvalidityoftheesta
7、blishedmode1.ThepowerflowdislributioninShandongpowerdandthreephaseshortcircuitcurrentsof廿1ebusinmainstationsareadjustedandcheckedtoensurethatthedatagenerallyagreewiththecorrespondingdatainPSASPenvironmentandthesteady-stateanddynamiccharacteristicsoftheestablishedm
8、odelarenearlythesameasthoseinactualnetwork.Keywords:HVDC;PSCAD/EMTDC:electromagnetictransientmodel;staticresponsecharacteristics;faulttransientresponsec
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