1000kv特高压交流升压变压器电场与波过程仿真

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1、华北电力大学专业硕士学位论文AbstractUltrahighvoltageACstep-uptransformerwillbeusedtoincreasethegeneratingvoltagedirectlyto1000kV.Soitwillbeverysignificanttoreducethemiddlestep-upequipmentsandsavesoilresourceandprojectcost.Thebestdesignhasbeenchosenaftertransportationfeasibilityandhighreliabil

2、ityhavebeenconsidered,andseveraldesignplanshavebeenanalyzedinthispaperfortheultrahighvoltagestep-uptransformer,thetypeofwhichisDFP-400000/1000.Themaininsulationconfigurationdesignforultrahighvoltagestep-uptransformerisoneofthemostimportantanddifficultproblems.Enoughmaininsulatio

3、nmarginisrequiredinordertoassurethereliableoperatingoftransformer,buttheinsulationmarginshallnotbetoomuchowingtoeconomicalcostbydecreasingthetransportationsizeandweight.Sohowtoeconomicallyandreliablydesigntheinsulationconfigurationisveryimportant.Electricfieldinseveralkeypartsha

4、sbeencalculatedandanalyzedbyfiniteelementanalysissoftwareinthispaper.Electricfieldstrengthvalues,insulationmarginandminimaloilgaphavealsobeenconfirmedinthispaper,whichprovidedthereferencebasisforinsulationdesign.Thelongitudinalinsulationconfigurationdesignforultrahighvoltagestep

5、-uptransformerisanotheroneofthemostimportantanddifficultproblems.Alsoenoughmarginisrequiredforthelongitudinalinsulationconfiguration,anditisimportanttodesignascientificandreliablelongitudinalinsulationconfiguration.Theelectricpotentialdistributionandtheelectricpotentialgradientd

6、istributionundertheactionofthelighteningfullwaveandchoppedwaveimpulsehavebeencalculatedbyprofessionalwaveprocesscalculationsoftwareinthispaper.Theminimalsafetymarginforlongitudinalinsulationhasbeenobtained,whichprovidedthebasisfordesign.Researchandcalculationforthemainandlongitu

7、dinalinsulationinthispaperprovidedthereferencebasisforthedevelopofultrahighvoltagetransformer.Keywords:UltraHighVoltageACStep-upTransformer;ElectricField;WaveProcess;InsulationMarginIII华北电力大学专业硕士学位论文目录摘要...........................................................IIAbstract.......

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