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时间:2020-05-14
《复杂输电网行波故障定位方法.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52卷第11期电测与仪表V0I.52No.112015生6月l0日ElectricalMeasurement&InstrumentationJun.10。2015复杂输电网行波故障定位方法蒋怡然,黄龙,叶皖,曾祥君,徐舜(1.长沙理工大学电网安全监控技术教育部工程研究中心,长沙410004;2.广东电网有限责任公司茂名供电局,广东茂名525000)摘要:为了解决故障发生在双回线路(或多回线路)或故障线路两端某个变电站行波定位装置时间记录失败时,可能出现的双端行波定位算法失灵的问题,论文提出了复杂输电
2、网行波故障定位方法。该方法依次假设电网中每一条线路为故障线路,采用保留故障线路的Dijkstra算法得到经过故障线路的计算路径。若计算路径存在冗余,则根据网络定位算法直接得到故障定位结果;若计算路径不存在冗余,则对输电网络实施单端行波定位装置增配方案,确保网络中任一行波定位装置时间记录失败时故障定位的可靠性。其次,论文还提出了一种复杂测量网络简化方法,能够简化网络定位算法的计算过程,提高定位计算的速度。最后对株洲实际电网进行仿真验证分析,结果表明,该方法实现简单,定位可靠性高,工程实用性强,能够解决复
3、杂输电网的故障定位问题。关键词:输电网;Dijkstra算法;故障定位;行波;多回线路中图分类号:TM93文献标识码:B文章编号:1001—1390(2015)11—0036—07Traveling-wave-·basedfaultlocationmethodincomplextransmissiongridJiangYiran,HuangLong,YeHuan,ZengXiangjun,XuShun(HunanProvinceKeyLaboratoryofSmartGridsOperationand
4、Control,ChangshaUniversityofScienceandTechnology,Changsha410004,China.2.MaomingPowerSupplyBureauofGuangdongPowerGridCorporationLimited,Maoming525000,Guangdong,China.)Abstract:Inordertosolvetheproblemthattraveling—wave—baseddouble—endfaultlocationalgorit
5、hmfailurewhenfaultoccurredinthedouble—circuittransmissionlines(ormulti—circuittransmissionlines)oroneofthetravelingwavelocatingequipmenttimerecordederror,atraveling—wave—basedfaultlocationmethodincomplextransmissiongridisproposedinthispaper.Firstly,this
6、paperassumeseachlineasfaultlineinturn,usingtheDijkstraalgorithmretainedthefaultlinetoobtainthecalculatingpathincludingthefaultline.Ifthecalculatingpathhasredundancy,thelocali-zationresultcouldbeobtainedbynetworklocationalgorithmdirectly.Ifthecalculating
7、pathhasnoredundancy,anadditionalconfigurationschemeisproposed,SOitcanmakesurethereliabilitywhenoneofthetravelingwavelocatingequipmenttimerecordederror.Secondly,asimplifiedmethodforcomplextransmissionlinesisproposedinthispa-per,whichcansimplifythecalcula
8、tionprocedureofnetworkalgorithmandincreasethespeedofthelocationcalcula—tionalgorithm.Finally,thispaperdosimulationforZhuZhoupowergrid.Simulationresultsshowthatthismethodiseasytoimplement.Thismethodalsohashighlylocationreliability
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