基于行波原理的直流输电线路过渡电阻在线测量

基于行波原理的直流输电线路过渡电阻在线测量 ------------------------------------------------------------------------------------------------ 基于行波原理的直流输电线路过渡电阻在线测量 输配电 中国电力 第43卷 故障暂态行波过程的波源就是在故障附加网络中突然并联于故障点的附加电压源，其幅值与故障点在故障前的稳态电压数值相同但极性相反，该附在此基础上，通过式(3)可计算出过渡电阻的初始值，为: ZCUFe-λL 1 输配电 第3期 输配电 中国电力 第43卷 性质以及故障发生的原因奠定了基础。 DONGXin-zhou.Studyofwavelettheoryappliedinfaultlocationoftransmissio nlinesbasedontravelingwaves,D,.Xi’an:Xi’anJiaotongUniversity,1996. ,8,FERNADOH.MAGNAGO,ALIA.Faultlocationusingwavelets,J,. 参考文献: —————————————————————————————————————— ------------------------------------------------------------------------------------------------ ,1,GALEPF,STOKOEJ,CROSSLEYPA.Practicalexperiencewith IEEETransonPowerDelivery,1998，13(4):1475-1480.,9,覃 剑，彭莉萍，王和春(基于小波变换技术的输电线路单端行波故 障测距,J,(电力系统自动化，2005，29(19):62-65，86. travellingwavefaultlocatorsonscottishpower’ s275&400kVtrans-missionsystem,C, //SixthInternationalConferenceonDevelopmentsinPowerSystemProtection,Nottingham(UK),1997:192-196.,2,陈 平,徐丙垠,李 京,等(现代行波故障测距装置及其运行 经验,J,(电力系统自动化，2003，27(6):66-69. QINJian,PENGLi-ping,WANGHe-chun.Singleterminalmethodsoftravelingwavefaultlocationintransmissionlineusingwavelettransform,J,.AutomationofElectricPowerSystems,2005,29(19):62-65,86. ,10,张小丽，曾祥君，马洪江，等(基于Hilbert-Huang变换 的电网故 障行波定位方法,J,(电力系统自动化，2008，32(8):64-68. CHENPing,XUBing-yin,LIJing,etal.Moderntravelingwavebasedfaultlocatoranditsoperatingexperience ,J,.AutomationofElectricPowerSystems,2003,27(6):66-69.,3,陈 —————————————————————————————————————— ------------------------------------------------------------------------------------------------ 平，牛燕雄，徐丙垠，等(现代行波故障测距系统的研制,J,(电 力系统自动化，2003，27(12):81-85. ZHANGXiao-li,ZENGXiang-jun,MAHong-jiang,etal.PowergridfaultslocationwithtravelingwavebasedonHilbert-Huangtransform ,J,.AutomationofElectricPowerSystems,2008,32(8):64-68.,11,卢 继平，黎 颖，李 健，等(行波法与阻抗法结合的综合单端 CHENPing,NIUYan-xiong,XUBing-yin,etal.Developmentofmoderntravelingwavebasedfaultlocatingsystem ,J,.AutomationofElectricPowerSystems,2003,27(12):81-85. ,4,CHENPing,XUBing-yin,LIJing,etal.Moderntravelingwavebased 故障测距新方法,J,(电力系统自动化，2007，31(23):65-69. LUJi-ping,LIYing,LIJian,etal.Non-communicationfaultlocatingoftransmissionlinebasedontravelingwaveandimpedancemethod ,J,.AutomationofElectricPowerSystems,2007,31(23):65-69.,12, 宋国兵，周德生，焦在滨，等(一种直流输电线路故障测距新原 理,J,(电力系统自动化，2007，31(24):57-61. faultlocationtechniquesforHVDCtransmissionlines —————————————————————————————————————— ------------------------------------------------------------------------------------------------ ,J,.TransactionsofTianjinUniversity,2008,14(2):139-143.,5,徐丙 垠，李 京，陈 平，等(现代行波测距技术及其应用,J,(电 力系统自动化,2001,25(23):62-65. XUBing-yin,LIJing,CHENPing,etal.Moderntravellingwavebasedfaultlocationtechnologyanditsapplication ,J,.AutomationofElectricPowerSystems,2001,25(23):62-65. ,6,葛耀中(新型继电保护和故障测距的原理与技术,M,(2 版.西 安:西安交通大学出版社，2007. SONGGuo-bing,ZHOUDe-sheng,JIAOZai-bin,etal.AnovelfaultlocationprincipleforHVDCtransmissionline ,J,.AutomationofElectricPowerSystems,2007,31(24):57-61. ,13,翟永昌.实用高压直流输电线路故障测距方法,J,.电力系 统及 其自动化学报，2008，20(5):70-72. GEYao-zhong.Newtypesofprotectiverelayingandfaultlocationtheoryandtechniques,M,.2ndedition.Xi’an:Xi’anJiaotongUniversityPress,2007. —————————————————————————————————————— ------------------------------------------------------------------------------------------------ ,7,董新洲(小波理论应用于输电线路故障测距研究,D,(西 安:西安 交通大学，1996. ZHAIYong-chang.PracticalfaultlocationmethodofHVDCpowertransmissionline,J,.ProceedingsoftheCSU-EPSA,2008,20(5):70-72. (责任编辑骆平) On-linemeasuringoffaultresistanceonHVDCtransmissionlinesbasedontravelingwaveprinciple RENDa-yong1,WANGZhi-bin1,FENGDong2,CHENPing3 (1.TianshengqiaoBureauofEHVPowerTransmissionCompanyofChinaSouthernPowerGridCo.,Ltd.,Xingyi562400,China;2.Maintenance&TestCenterofEHVPowerTransmissionCompanyofChinaSouthernPowerGridCo.,Ltd.,Guangzhou510663,China; 3.ShandongUniversityofTechnology,Zibo255049,China) Abstract:AfterafaultoccursonaHVDCtransmissionlines,ifonecanfurtherfindouttheinformationaboutfaultresistancebasedonthefaultpositioninformationgivenbythetravelingwavebasedfaultlocators,anddeducethefaultpropertyandfaultcausebasedonthis,wellthenitismostfavorableforfastfaultlooku—————————————————————————————————————— ------------------------------------------------------------------------------------------------ pandrestore.Therefore,basedontheanalysisofgenerationmechanismandtransmissioncharacteristicoffaultgeneratedtransienttravelingwavesonHVDCtransmissionlines,asetsofon-linemethodsforfaultresistancemeasuringwerepresented,i.e.initialvaluemethodusingmagnitudeoffaultinducedinitialsurge,mediumvaluemethodbasedonmagnituderelationbetweenaforwardsurgeandcorrespondingreflectedsurgeatfaultpoint,andsteadystatevaluemethodusingpost-faultvoltageandcurrentsignalsofbothlineterminalsatsteadystate.SimulationshowsthatthepresentedmethodsforfaultresistancemeasuringofHVDCtransmissionlinesarefeasibleandwithhighaccuracy. HVDC;transmissionlines;travelingwaves;faultresistance ——————————————————————————————————————