電子式互感器數(shù)字輸出校準(zhǔn)系統(tǒng).pdf

1、華中科技大學(xué)碩士學(xué)位論文電子式互感器數(shù)字輸出校準(zhǔn)系統(tǒng)姓名：余春雨申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：電工理論與新技術(shù)指導(dǎo)教師：李紅斌20040427華中科技大學(xué)碩士學(xué)位論文；=≈==；===================j=========：：：：=AbstractAccordingtothestandardIEC600448theelectriccurrenttransducers，thequalityinspectionandtestingc

2、enterforelectricequipmentofelectricpowerneedtocompileacalibrationcriterionforelectrictransducersanddesignthecorrespondingcalibrationsystemtounifythecalibrationstandardsandtestmethodItiSfavorableforreachingmarketoftheelec

3、trictransducersandtoensuresafetyofpowersystemThepaperdiscussesthedevelopmentofthecalibrationsystemforelectrictransducerswimdigitaloutputThestandardconventionaltransformersareneededforthecalibrationoftheelectricaltransduc

4、ers，theanalogoutputoftheeleclromagnetictransformerisconveaedtodigitalsignalsbythereferenceA／Dconvert，andthenthesignalsarecomparedwiththetestsignal，Thecalibrationsystemismakeupofthestandardconventionaltransformers，therefe

5、renceA／Dconvertthetestedelectric訂ansducers，thePC，thesoftware，etcFirstly，thedigitaloutputandcommunicationofelectricalinstrumenttransducersisintroducedTheserialunidirectionalmultidroppointtopointcommunicationbetweenthemerg

6、ingunitandthesecondaryequipmentsisrealizedbyEthemetTheR&Dofthemergingunitofferdigitalsignalforthec#ibrationsystemAtthepartofthedevelopmentofthecalibrationsystem，thetimedelayintroducedbytheA／I)conventionanddataprocessingi

7、sdiscussed，thetimedelayofthecalibrationsystemisanalyzed，tooThentheafi也raeticofthestandarddigitalsignalcomparedwiththetestdigitalsignalisdiscussedAtthelastofthepaperthesourceofuncertaintyofthecalibrationsystemisanalyzed，t

8、heexpandeduncertaintyiscalculatedThecalibrationrangeis200／∥120％Ufor10kV500kV／43electricvoltagetransducers，and20％d20％Ifor5A05000AelectriccurrenttransducersThesystemisoptimizedforcalibrationwiⅡl50Hzsinusoidalcurrentorvolta