基于電-聲綜合分析的變壓器局部放電模式識(shí)別研究.pdf

1、華北電力大學(xué)（保定）碩士學(xué)位論文基于電聲綜合分析的變壓器局部放電模式識(shí)別研究姓名：王永申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：電氣工程；電工理論與新技術(shù)指導(dǎo)教師：趙書濤；何平201103AbstractIIAbstractPartialDisgePatternRecognitionfthetimelydetectionofpotentialfailurestopreventtheoccurrenceofmajaccidentspowersystemis

2、imptant.PDpatternrecognitioninthecurrenttransfmersareelectricalpulsemethodgaschromatography.Becausethefieldastrongelectromagicinterferencethecomplexinternalstructureofthetransfmerelectricpulsemethodofidentifyingtheeffect

3、isnotideal.Gaschromatographyfromelectromagicinterferencehighrecognitionaccuracybutthereisaseriouslagisnotconducivetotimelydetectionofpotentialfailures.Transfmerpartialdisgebytheultrasonicsignalgeneratedbyelectromagicinte

4、rferenceissmallbutthebisnarrowthewavefmiscomplexsusceptibletoinfluencetheinternalstructureofthetransfmer.Indepthanalysisofelectricalpulsesignalsultrasoundsignalsbasedontheirownacteristicsthispaperpresentsacomprehensivean

5、alysisbasedonelectroacousticpartialdisgepatternrecognitionmethodtheestablishmentoftheExperimentalAnalysisofhardwaresoftwaresystems.Firstaccdingtotheprincipleacteristicsofpartialdisgestheestablishmentoffivedisgeoftransfme

6、rmodelsetupapartialdisgetestsystem.Includingmeasurementsubsystemcoupledsubsystemtransptsubsystemtheexperimentalsystemschematicwiringdiagram.Secondcommonspaceftheexperimentalsysteminterferencepowerdisturbancesinterferewit

7、haffectthegroundingresistancethecrespondinghardwarearegivendisincentivessoftwaredestructiveinterferencemethod.SoftwaremethodusingwaveletbasedalgithmtoeliminateinterferencedestructiveinterferencewiththeFouriermethodwereco

8、mpared.Thentheanalysisoftransfmerpartialdisgelocationmethodofelectricalacteristicsdisadvantagesofvariouspositioningmethodsthesoundofacousticlocationmethodextracttheelectricalpulsesignalacteristicstheultrasonicsignalintim

9、edomainstatisticalfeaturesbuildfeaturevectstoachieveatypicalDisgepatternrecognition.FinallythedevelopmentofthetransfmerpartialdisgeanalysissystemincludingdataacquisitiondisplaywavelettransfmFouriertransfmdestructiveinter