資源描述:
《基于數(shù)學(xué)形態(tài)學(xué)的輸電線路單端行波故障測距研究》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在教育資源-天天文庫。
1、電網(wǎng)技術(shù)PowerSystemTechnology第25卷第4期電網(wǎng)與清潔能源Vol.25No.42009年4月PowerSystemandCleanEnergyApr.2009文章編號:1674-3814(2009)04-0029-05中圖分類號:TM773文獻(xiàn)標(biāo)志碼:A基于數(shù)學(xué)形態(tài)學(xué)的輸電線路單端行波故障測距研究劉萬超1,陳平1,孫佳佳2,祝成3,馬永明1(1.山東理工大學(xué)電氣與電子工程學(xué)院,山東淄博255049;2.山東電力工程咨詢院,濟(jì)南250013;3.德州電力公司調(diào)度中心,山東德州253024)FaultLocatingofonSingleTerminalT
2、ravelingWavesforTransmissionLinesBasedonMathematicalMorphologyandCorrelationFunction1,CHENPing1,SUNJia-jia2,ZHUCheng3,MAYong-ming1LIUWan-chao(1.CollegeofElectricalandElectronicEngineering,ShandongUniversityofTechnology,Zibo255049,ShandongProvince,China;2.ShandongElectricPowerEngineeringC
3、onsultingCompanyLTD,Jinan250013,ShandongProvince,China;3.DispatchingCenter,DezhouElectricPowerCompany,Dezhou253024,ShandongProvince,China)ABSTRACT:Amulti-resolutioncorrelationfunctionalgorithm持了行波的主要特征。在有效濾波的基礎(chǔ)上采用具有多分辨whichusedforfaultlocationofsingleterminaltravelingwaves能力的行波相關(guān)法,實(shí)現(xiàn)了單端行
4、波故障測距可靠性和準(zhǔn)確andaselectionoffilterelementsusedtodealwiththeactual性的統(tǒng)一。通過對輸電線路實(shí)測故障數(shù)據(jù)的處理,證明該方shapeofthetravelingwavearepresented.Themulti-window案能同時(shí)保證測距可靠性和準(zhǔn)確性,具有很高的實(shí)用價(jià)值。approachisusedinthecorrelationalgorithmtoresolvethe關(guān)鍵詞:數(shù)學(xué)形態(tài)學(xué);輸電線路;行波;故障測距possiblemigrationofextremepointsinwidewindow.Usin
5、gmathematicalmorphology,apre-filterisdesignedaimingattheissuethatwave-relatedalgorithmisvulnerabletowavedistortion0引言onactualfaultlines.Thepre-filtercaneffectivelybatethedistortionoftravelingwave,whilemaintainthemainfeaturesof高壓輸電線路單端故障測距原理可以分為兩thetravelingwaves.Themulti-resolutionwave-r
6、elatedalgorithms類,一類是利用工頻量測距原理,線路采用集中參areusedonthebasisofeffectivefilteringtoachieveaunificationofaccuracyandreliabilityoffaultlocationbasedontraveling數(shù)模型,該方法受過渡電阻、系統(tǒng)運(yùn)行方式等因素的影響較大;另一類是利用暫態(tài)行波測距原理[1-2],wavesofsingleterminal.Bydealingwiththeactualtravelingwavesinfaulttransmissionlines,thepre
7、ceptwasprovedthatit此原理應(yīng)用分布參數(shù)模型,不受過渡電阻、系統(tǒng)運(yùn)canassurethereliabilityandaccuracyoflocation,andisofhigh行方式等因素的影響,但可靠性差。影響現(xiàn)代行波practicalvalue.測距原理可靠性的主要原因是行波在傳播過程中KEYWORDS:mathematicalmorphology;correlationfunction;發(fā)生的衰減和畸變現(xiàn)象及噪聲影響,能否有效濾除transmissionline;travelingwave各種干擾,提取故障暫態(tài)行波