,,,(,450002):3:、、。,、、。,。:;;;;:TM412:A1674-6236(2012)09-0137-04Summaryofoverheatprotectionfordry-typetransformerFENGJian-qin,KANGGuo-ping,CHENZhi-wu,ZHENGAn-ping(ZhengzhouUniversityofLightIndustry,Zhengzhou450002,China)Abstract:Threeoverheatprotectionsystemfordry-typetransformerareintroduced:Contactthermalresistanceoverheatprotectionsystem,Infraredoverheatprotectionsystem,Fiber-opticsensingoverheatprotectionsystem.Thethermalresistanceoverheatprotectionsystemandinfraredoverheatprotectionsystemarewidelyused.Thetemperaturemeasurementtechnology,worktheories,characteristics,applyingobjectsareanalyzed.Theresponsespeedofallthesethreekindsofoverheatprotectionsystemwastoolow.ThepredictioncontrolmethodbasedontheBPneuralnetworkisfeasibletoincreasetheresponsespeedofoverheatprotectionsystemfordry-typetransformer.Keywords:dry-typetransformer;overheatprotection;thermalresistance;fibergrating;neuralnetwork:2012-03-05:201203040:(102102210141):(1962—),,,,。:。、、、、。,,。,。,。1,,。,。,。。、,。,。,。1.1,。1)、,,。pt100、pt1000。pt100[1]。2):,。、、、、。、、,,,1~2min。1.2,。,,,[2]。ElectronicDesignEngineering20Vol.209No.920125May.2012-137-《》20129,。,。、、,。20℃,5~10℃,,。1.3,,。1),LED,,[3]。2080,LuxtronWTS-11。2),。,,,[4]。,。3)2090,,[5]。,。,,。,、、,。2,。,、PLC,、。:1)。,;2)。,;3)。、、;4)。,,;5)。;6)。PC,。2.1、、,。pt100,1。,MPU,、A/D,,。MPU,、、[6]。、、,,。2.2,,。,35kV110kV,。2。1Fig.1Thermalresistancetemperaturemeasurementandcontrolsystem2Fig.2Infraredtemperaturemeasurementandcontrolsystem-138-,A/DDSP,,,、。,,。2.3,,,DSP,DSP,,3。,[7]。,,。3,,“--”,。,。BP,。,。,BP,。,。BP,、、。[8]。43BP。3,9,6。:1)S(I,U,cosψ,θ1,θ2…θ6),,I,U,cosψ,θ1θ66。2)1jxi,yi,。xlj=ni=1Σwijyl-1i(1)ylj=f(xlj)(2)yjij,wijij,f(xlj)j。3):Elj=12(yl*j-ylj)2(3)4),:wij=wij-η·坠Elj坠wij,0η1(4)η。Eε,,。,I,Ucosψ。,、,,。41):、、。2)。,、、3Fig.3DistributedFBGtemperaturemeasurementandcontrolsystem43BPFig.4ThreelayersBPneuralnetwork,-139-《》20129,。3),。BP、,。:[1]PradhanMK,RamuTS.Predictionofhottestspottemper-ature(HST)inpowerandstationtransformers[J].IEEETransactionsonPowerDelivery,2004,18(4):1275-1283.[2],,,.[J].,2002,22(9):113-117.YANGWu,WANGXiao-hua,RONGMing-zhe,etal.On-linetemperaturemeasurementswithinfraredtechnologyonhighvoltagedevice[J].ProceedingsoftheCSEE,2002,22(9):113-117.[3],,,.[J].,1996,5(23):465-469.JINXiao-dan,LIAOYan-biao,LAIShu-rong,etal.Anopticalfibertemperaturesensorsystembasedonthebirefringenteffectwithhighaccuracyandcompensationfunction[J].Chinesejournalofasers,1996,5(23):465-469.[4],,.[J].,2001,3(41):59-61.WANGYan-yun,LUOCheng-mu,SHENZhu.Semiconductorabsorptionfiber-optictemperaturesensor[J].TsinghuaScienceandTechnology,2001,3(41):59-61.[5]TheuneNM,MllerM,HertschH,etal.InvestigationofStatorCoilandLeadTemperatureonHighVoltageInsideLargePowerGeneratorsviaUseofFiberBraggGratings[J].ProceedingsofIEEEsensors,2006,1(2):1603-1607.[6],,,.[J].HIGHVoltageEngineering,2003,29(9):26-28.QINAZheng,SUNJiao-de,YUNAKe-dao,etal.On-linemonitoringofhot-spottemperatureintransformerwinding[J].HighVoltageEngineering,2003,29(9):26-28.[7]GreggJ,ToddMichaelD,BryanLA,etal.FiberBragggratinginterrogationandmultiplexingwitha3×3couplerandascanningfilter[J].Journaloflightwavetechnology,2006,8(18):8.[8]HeQ,SiJ,TylavskyDJ.Predictionoftop-oiltemperaturefortransformersusingneuralnetworks[J].IEEETransactionsonPowerDelivery,2000,15(4):1205-1211.[3],.、[M].:,2007.[4].[D].:,2008.[5],.[J].,1997,19(4):566-569.ZHANGJun-rong,ZHANAGDe-hai.Thefieldmeasurementofmicrowaveremotesensingofatypicalsurfacefeaturespermittivity[J].JournalofElectronics,1997,19(4):566-569.[6],,.[J].,1997,1(1):40-45.CHENZhi-yu,LIAn-lai,ZHOUDong-qing.Theresultswiththecontrolofspacewaveandlongsamplemethodformea-suringthedielectricconstant[J].JournalofRemoteSensing,1997,1(1):40-45.(136)!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!####:CN61-1477/TN:ISSN1674-6236:http://mag.ieechina.comdzsjgc@vip.163.com():2105-1-3:710082-140-