變壓器繞組絕緣缺陷檢測方法的研究.pdf

1、華北電力大學(北京)碩士學位論文變壓器繞組絕緣缺陷檢測方法的研究姓名：王志嬌申請學位級別：碩士專業(yè)：電氣工程；高電壓與絕緣技術(shù)指導教師：全玉生201103華北電力大學碩一I：學位論文AbstractThetransfomer，asimportantelectricalequipmentintheelectricpowersystems，isdirectlyrelatedtothesafetyoperationsofthepowcr鰣dT

2、hefaultsoftraIlsfomermaybring鏟eathamstotheentirepower黟idandresultinhugelossesStatisticsshowthattheaccidentoftransfomlerismainlyduetothedeteriorationofitsinsulationpropertiesSofar，transfomerfaultdiagIlosismethodsusuallyne

3、edsyntheticjudgmentofseVeralfieldtests，inwhichcVe巧oneinVolVeslargeorcomplicatcdequipments，strictantiinterfercncemeasures，specialmeasurem髓t鋤dcontrolinstmment鋤dprofcssionaltesterThcrefore，studyoftheinsulationd鋤agedetecting

4、tecluliqueforthetransfomcrwindingisnotonlyofimpon鋤ttheoreticalsignificanceandpracticalengineeringValue，butalsohasenomoussocialandeconomicbenefitsAnoVelthree—dimensionalsurfacemappingmethodisproposedinthispapertodetectthe

5、insulationdefbctsintr鋤sfo加1erwindingwith硼indicationofthelocationandseveritySuchresultscanbereachedfromthecoordinateinfo姍ationofthepeaksintheVoltagecu期entco盯elationcoe施cientmapforeVe巧windingThismethodisrelatiVelyVisual，in

6、tuitive，simplepracticalandstrongoperational，withoutinvolvinglargeorcomplicatedequipmentsThepaperpresentedusingcapacitanceVariationstosimulatetheseV嘶tyofthed鋤ages，byresearchingthemultiportelectricalcirCuitsimulationmodelo

7、fthesev鰣tyofinsulationdamageforthetr鋤sfo徹erwindingBasedona1argenumberof900dresultsinthesimulationsofinsulationdefectswithVariouslocationsaIldtypes，themethodispI0vede仃ectiveandpracticalKe”舊rds：t豫nsfo姍％winding，non一衄if0衄dis