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1、第52卷第11期電測與儀表V0I.52No.112015生6月l0日ElectricalMeasurement&InstrumentationJun.10。2015復(fù)雜輸電網(wǎng)行波故障定位方法蔣怡然,黃龍,葉皖,曾祥君,徐舜(1.長沙理工大學(xué)電網(wǎng)安全監(jiān)控技術(shù)教育部工程研究中心,長沙410004;2.廣東電網(wǎng)有限責(zé)任公司茂名供電局,廣東茂名525000)摘要:為了解決故障發(fā)生在雙回線路(或多回線路)或故障線路兩端某個變電站行波定位裝置時間記錄失敗時,可能出現(xiàn)的雙端行波定位算法失靈的問題,論文提出了復(fù)雜輸電
2、網(wǎng)行波故障定位方法。該方法依次假設(shè)電網(wǎng)中每一條線路為故障線路,采用保留故障線路的Dijkstra算法得到經(jīng)過故障線路的計算路徑。若計算路徑存在冗余,則根據(jù)網(wǎng)絡(luò)定位算法直接得到故障定位結(jié)果;若計算路徑不存在冗余,則對輸電網(wǎng)絡(luò)實施單端行波定位裝置增配方案,確保網(wǎng)絡(luò)中任一行波定位裝置時間記錄失敗時故障定位的可靠性。其次,論文還提出了一種復(fù)雜測量網(wǎng)絡(luò)簡化方法,能夠簡化網(wǎng)絡(luò)定位算法的計算過程,提高定位計算的速度。最后對株洲實際電網(wǎng)進(jìn)行仿真驗證分析,結(jié)果表明,該方法實現(xiàn)簡單,定位可靠性高,工程實用性強(qiáng),能夠解決復(fù)
3、雜輸電網(wǎng)的故障定位問題。關(guān)鍵詞:輸電網(wǎng);Dijkstra算法;故障定位;行波;多回線路中圖分類號:TM93文獻(xiàn)標(biāo)識碼:B文章編號: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