同杆并架线路保护与故障定位技术分析

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1、华中科技大学硕士学位论文theoreticalbasesforimprovingandperfectingtheperformanceoftherelayprotections.Theproblemsindifferentialprotection,distanceprotection,phaseselectorandthedirectionalelement,boughtbythedoublecircuitlinesonthesametower,areanalyzedandsummarizedinthepaper.Itals

2、oanalysesthespecialrequirementsofautomaticreclosinginthedoublecircuitlinesonthesametower.Combiningwiththeexistinghigh-voltagetransmissionlineprotectiondynamicsimulationtestspecifications,putforwardthedynamicsimulationtestschemethatissuitableforprotectiontestofthedou

3、blecircuitlinesonthesametower.Itisusefultocompletelyandobjectivelyassesstheoverallperformanceoftheprotection.Thepaperanalyzestheperformanceofthepresentusualfaultlocationalgorithmsforthedoublecircuitlinesonthesametower,pointsthatitmayincreasetheerrorwhenthepresentusu

4、alfaultlocationalgorithmsareusedinnotcompletelytransposedlinesornotransposedlines.Sothepaperproposesthenewfaultlocationalgorithmwhichisbasedoncalculatedingthelinevoltagedistributionineverysubparagraph.Theresultsofsimulationhavedemonstratedthatithasanidealfaultlocati

5、onprecisionwhetherintheuniformtransposedlinesornon-fullytransposedlines.Keywords:Transmissionlinesonthesametower,Incomplete-journeytransmissionlinesonthesametower,Relayprotection,Dynamicsimulationexperiment,FaultlocationIII华中科技大学硕士学位论文目录摘要...........................

6、.........................................................................................IABSTRACT......................................................................................................II1绪论1.1引言........................................................

7、..................................................(1)1.2同杆并架线路保护与试验技术..............................................................(2)1.3故障测距..................................................................................................(5)1.4论文的主要内容和章节安排.........

8、.........................................................(6)2非全程同杆并架线路保护动作特性仿真分析2.1引言.....................................................