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时间:2019-11-22
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1、2016!9"25#$33%$5&TelecomPowerTechnologySep.25,2016,Vol.33No.5-./0:10093664(2016)0500890312340:TM247.1-5678:A¬à±ÄHIêX
2、ØYyØ1Aà±®y1,*¬o2(1.îï0²Ùû¡¢3´AÅ,îï443000;2./ív204NÛOµ23,îï443000)KL:,Nápâ¯m#>9QR0#ÊãbÃÐÀgqrs。Õ¡×ëVabh«rsPÂC<ð,ëìëVabd#>9QRG9¡m9:@Âu¤±。Ò<ðÏuëVpLmifëìK>,XYt³¡%#Êm¡áou
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4、(FQRin'ëÜefy'ëÜm뤲%úmào,pz%9¦#`GÏuëVab£¤QRG9。eïElmu<ðm+,ávoá。@MN:ëVab;QRG9;#>9;QRSTTheApplicationofWaveletTransforminPowerLineFaultLineSelectionXIEFeng1,LIUYanfang2(1.YichangPowerReconnaissanceDesignCorporation,Yichang443000,China;2.SchoolofElectricalEngi
5、neering&RenewableEnergy,ChinaThreeGorgesUniversity,Yichang443000,China)Abstract:Thepowerlinefaultcausedbyuncertaintybringsgreatchallengestothesafeoperationofpowergrid.Inthisarticle,wavelettransformwasusedasasignalprocessingmethod.Theresearchandapplicationofwavelettransforminfaultlines
6、electionofpowerlinewereanalyzed.Thismethodusedthewelltimefrequencyanalysisabilityofwavelet.InChinatheneutralpointofthemediumandlowvoltagedistributionnetworkscommonlyusearcsuppressioncoilgrounding.Forthissituation,thedistributionandcharacteristicsofsteadycomponentandtransienthighfreque
7、ncycomponentexistinginthesmallcurrentgroundsystemsinglephasegroundingfault.Thefaultlineselectionwasimplementedbywaveletpackettransformafterextractingthezerosequencecurrent.Thecorrectnessandeffectivenessofthemethodwereverifiedbyanumericalexample.Keywords:wavelettransform;faultlinesele
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