OSFSZ-150000-220自耦變壓器的研制.pdf

1、山東大學碩士學位論文OSFSZ150000220自耦變壓器的研制姓名：陳延剛申請學位級別：碩士專業(yè)：電氣工程指導教師：王秀和20091015山東大學工程碩士學位論文ABSTRACTWiththeenhancementofnationaleconomyinourcountrytheneedofelectricpowerincreasescontinuouslyandelectrictransmissionandtransformation

2、industrydevelopsrapidlyElectdcconsumptionofurbanpopulationindevelopedareashasapproachedthatofdevelopedcountryTransformersof220kVgradehavebeenusedincentralzoneofcityandindustrialdevelopmentZone，andhavebecomepowersupplycen

3、trumsTransformersof220kVgradecallbeproducedintooilimmersedautotransformer，inordertoreduceloadloss，minishtransformer’svolumeandeconomizematerials，forexample，coppersiliconsheetsteelandinsulationmaterial，etcTheautotransform

4、erCanbeproducedwithlowloss，lownoise，tlighsecurityfewshortcircuitandlowpartialdischargewithreasonabledesignThelargeelectricpowerautotransformerof220kVgradeisdesignedonsomeexperimentationresultsandpracticeexperiencebecause

5、ofconditionrestrictionThereisnoaccurateanalysisandcalculationBecauseofthemagneticandelectricrelationbetweenthefirstsideandsecondside，theshort—circuitimpedancecalculationandwindingwaveprocesscalculationoftheautotransforme

6、risdifferentfromcommontransformer碭einitialendelectricfieldoftheautotransformerof220量ygradeisanalyzedinthispaperbyusingfiniteelementanalyzablesoftwareTheinfluenceofpaddingblock’Slengthtoelectricfieldinoilaroundtheelectros

7、taticplateisalsodiscussedThepaddingblock’slengthiscalculatedwhenthemaximumofelectricfieldintensityintheoilisminimunlInotherwordtheelectricfieldintensityCanbereducedbyadjustthelengthofloopcircle’paddingblockThetankofoil—i

8、mmersedtransformeristheshellwhichprotectstransformer’sactivepartthecontainerwhichiSfilledwithoil，andtheframewhichfLxesouteraccessoriesMeanwhile，thethermalenergybroughtfromthelossoftheactivepartcallbedispersedtoairinthema

9、nnerofconvectionandradiationbythetankBecausethetransformer’tankistheoneofmainpartsofoil—immersedautotransformeritsintensityisveryimportanttothetransformer’SfunctionTheOSFSZ150000／220autotransforrnerisdesignedbyanalyzable