110千伏交聯(lián)聚乙烯電纜預制型接頭局部放電寬頻帶檢測研究.pdf

1、重慶大學碩士學位論文110千伏交聯(lián)聚乙烯電纜預制型接頭局部放電寬頻帶檢測研究姓名：龔寧濤申請學位級別：碩士專業(yè)：電氣工程指導教師：唐炬20090521重慶大學碩士學位論文英文摘要ABSTRACTHVca_bleaccessoriesarenotonlymeimport鋤tco珈【ponentel鋤emofpowercable0p訓on，butalsegarded弱o∞ofnleimportaIltpowerequipmentf0rpar

2、ticularpositionbyelec仃icald印ar虹IlentPartialdischarge(PD)isnotonlymemaillreasont0causemeearlyiIlsulationde磬‘a(chǎn)dationofHVca_bleaccessories，butalso廿lecharacteristicscalart0describeitsiIlsulationstateItismealliIlgfult0detect鋤

3、ddia印osepanialdisch鶿eiIlHVcableaccess鰣esBased0n廿1efeaturesoful傾hi曲觸quency(UⅡ)detectionforPDinpowercable鋤dantennaⅡleo阱electricalme勰urement’t11ebroadbanddetectionforPDmXLPEcablejointsis咖diedinmisp印er111emainrese卸chworkis弱f

4、ollows：111e硼uence0nIJlⅡelectroma盟eticwavepropagation，resulting丘omintemals仃ucn鵬ofHVcablejointsandcatadiop仃ice彘ction0ntheinterfaceofmultilayerareql腳itatiVeanalyzedF刪lemore，combinedw沛aCt吼lsizeof1lOkVⅫPEcablejoimsanduSingfmi

5、tedi行erencetimedoma證method(FDTD)，fourfactorsillnuencmg切Ⅱdetectionfi”PDincablejoiIIcsareresearched，whiChisproVidedf0rthedeVelopmentofbroadbandsensor111einnerbroadbaIldriIlgsensor印pliedt0PDdetectioniIlcablejoiIltsisdeVelop

6、ed，whichisanalyzedbycapacitiVecoupliI瑪and觚tennainductionT】[1roughArPDRAWsimulation，itshows廿latthewidmaIldradiusofmetallic血g鋤ds仃ayiIlductioniIlsi印al0l啦mtporthaVedh’eCti11nuenceonsensor’sperfomance，reasonableandoptimizatio

7、nalmethodSareproposed嬲、)~7e11Accordingtofieldmeasl】rement，thesensor’sbandc吼reach500MHz肌ddetectnsleVelof仃ansientpulsesi伊ale能ctiVely謝m1iIlearresponsepe而mance，whiChlaythe‰dationofest乏出1ishmentofbroadbaIldmonitoringsystemThe

8、broadbandsystemforPDdetectioniIl11OlVXLPEcablejointsises詘lishediIllabomtoⅨwhichisdealw曲fordataacquisitionreliabil咄Funhemore，nlrou曲廿leiIl仃oductiont0仃鋤smission1inemodelcalledweighingimpedancedistributionparametersmisedbyRJ

9、obava，tlleproperdete：ctiI培positionofiIulerbroadbaIldsensorisobtajnedThepe怕肌aIlceofdetectingsystemis印praisedbythewayofdischa瑪equant時calibration，sensitiV時calibrationa11dsimulatedPDdetectionTheresultsshownlatnlesyst鋤’bandwi