高壓電流互感器在線校驗系統(tǒng)二次信號數字化技術.pdf

1、華中科技大學碩士學位論文高壓電流互感器在線校驗系統(tǒng)二次信號數字化技術姓名：胡琛申請學位級別：碩士專業(yè)：電氣信息檢測指導教師：李紅斌20090526華中科技大學碩士學位論文IIAbstractAspowersystemdevelopmemequicklypeoplepaymeattentiontotheproblemofelectricalenergymeasurment.Weshouldcontroltheerroftheelectri

2、calenergymeasurmenttoguaranteetheaccuracythereliabilityoftheelectricalenergymeasurment.Theerrofcurrenttransfmermakeanimptantimpactonttheaccuracyoftheelectricalenergymeasurment.Toguaranteethereliabilityofpowersupply.wesho

3、uldcalibratethecurrenttransfmeronlineInthecaseofnonpower.TheonlinecalibrationsystemofHighvoltagecurrenttransfmer.Includeastardloopacalibratedloopareceivepartinthelowvoltageterminaladataprocessingplatfmonthepersonalcomput

4、er.ThisarticlediscusstheresearchmethodofsecondarysignaldigitizetechnologyoftheonlinecalibrationsystemofHighvoltagecurrenttransfmerdiscussthedesignmiethodofthehardwaresoftwareofsecondarysignaldigitizetechnology.Itincludet

5、hedesignoftransducesignalprocessingtechnologythedesignofthetaansducersignalacquisitingcommunicatingtechnologythedesignofthetaansducersignalreceivingtechnology.Thestardloopthecalibratedloopacquisitethecurrentsignalatthesa

6、metime.thetheysnedthesignaltothereceivepartinthelowvoltageterminalbythefiberatlastthereceivepartsendthesignaltothedataprocessingplatfmonthepersonalcomputer.TheonlinecalibrationsystemofHighvoltagecurrenttransfmerhasgoneon

7、experimentinthelabatyonthespot.Fromtheexperimentresultwocanseethatinthelabatythechangeoftheratioerris0.02％，thechangeoftheangleerris2.4fen.onthespotthechangeofratioerris0.1％intheAphaseintheBphase.thechangeoftheangleerris1

8、fen.thechangeofratioerris0.2％intheCphasethechangeofangleerris10fen.Theerrofthecalibratedcurrenttransfmeris0.2level.FromtheresultwecanseethatthewholesystemachievetheonlinecalibrationthchnologyofHighvoltagecurrenttransfmer