220kv電流互感器在線校驗(yàn)系統(tǒng)

1、華中科技大學(xué)碩士學(xué)位論文220kV電流互感器在線校驗(yàn)系統(tǒng)姓名：陳霄申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：電氣信息檢測(cè)技術(shù)指導(dǎo)教師：李紅斌20080605華中科技大學(xué)碩士學(xué)位論文IIAbstractTheerrsofthecurrenttransfmersdirectlyaffecttheerroftheelectricenergymeasurement.Therefethenecessityofmonitingtheerrsofthecurrentt

2、ransfmersisunsuspicious.Currentlytheseparationofpowergenerationtransmissionfromelectricpowerindustrywhichcarriesoutthesystemrefmmakestheaccuracyfairnessoftheelectricenergymeasurementhighlyconcernedbyallparties.Indertogua

3、ranteetheaccuracyoftheelectricenergymeasurementweneedtomonittheonlineoperationcurrenttransfmerwithoutpowercut.Thepaperproposesamethodtocalibratethecurrenttransfmersonline.Firstwesynchronouslymeasurethecurrentofthebusbart

4、hecurrenttransfmeronlinethenbycomparingtheresulttorealizethemonit.Themethodbasedonameasurementtechnologyofelectroniccurrenttransfmer.Inthepaperweintroduceallpartsincludingtechnicalplanerrdistributionfirstly.Subsequentlyw

5、edesignthehardwaresoftwarecrelatedtothesystemincludingaclampshapeaircoilbasedonPCBalsoacircuitwhichcontrolledbytheprogrammingintheMSP430F1611realizessynchronoussampleopticalfibercommunicationinthehighvoltagesideacircuitw

6、hichalsocontrolledbytheprogrammingintheMSP430F1611realizesdatareceivingintwoChannels、PCcommunicationanalogueoutputinthelowvoltageside.TheexperimentshowsinthepartofclampshapeaircoilbasedonPCBinpassingintegralcircuitthecha

7、ngesoftheratioerrlessthan0.05%、thechangesoftheangleerrlessthan0.03in50HzInthepartofsynchronoussampleusedanalogtodigitalconvertdatacommunicationthechangesoftheerrlessthan0.03%alsothechangesoftheerrlessthan0.02%whenthefreq

8、uencychangesfrom49.8Hzto50.2Hz.Thedesignrealizes0.1leveraccdedwiththetechnicalrequirementofthesystemfinishesthetargetoftheonlinecalibratetothecurrenttransfmer.KeyWds:OnlineCalibrationElectronicCurrentTransfmersLowPowerOp