资源描述：
《外文翻译 外文文献 英文文献 变压器励磁涌流的抑制》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、TransformerinrushcurrentsuppressionTransformerinrushcurrentleadsnotonlytotheprotectiverelayingmisoperation,derivedfromthepowergridvoltagesags,harmonicpollution,andtheinrushcurrent,ferromagneticresonanceovervoltageinpowersystemoperation,tobringthenegativeeffec
2、tthatcannotunderestimate.Fordecadesthepeoplethroughtheidentificationofinrushcurrentfeaturemethodtoreducetherelaymisoperationrate,butdidnotgainagoodreturn,malfunctionrateisstillhigh.Asforthevoltagesag,harmonicpollution,andtheinrushcurrent,eliminationofthemoreb
3、enonplussedoversth..Thereasonisthatpeoplethinktheinrushcurrentappearsirresistible,canonlyuse"recognition"countermeasure,namely"hide"countermeasure.Infact,changeatrainofthought--"inhibition",canbefullyrealized,andhaveachieved.IntroductionTransformerinrushandsu
4、rgesuppressioncapacitorchargingprincipleiscompletelysimilartotheinductanceandcapacitanceareenergystoragedevices,theformerdoesnotallowcurrentmutation,whichdoesnotallowvoltagesurge,powerdropwillinduceatransientprocess.Accessinthepowertransformerno-loadtransform
5、eroutletpowerfailureandprotectiondevicestoberemoved,becauseofasideofthetransformerwindingstofeelthesurgeappliedvoltagevaluesaresometimesgeneratedagreatinrushcurrent.Inrushcurrentpeakisnotonlylarge,andcontainsverymanyharmonicsandDCcomponent.Electricalequipment
6、onthegridandthusresultinanextremelynegativeimpact.1.thedangerofinrushcurrent1.1causedbythetransformerprotectiondevicesmalfunction,thefrequentfailureofthetransformerandputintooperation;1.2removalofthetransformershort-circuitfaultoutletvoltagegeneratedwhenthesu
7、ddenincreaseintheprotectioninducedbytransformermalfunction,sothateachsideofthetransformerloadallthepower;1.3Apowerstationaccesstoapowertransformerno-loadinrushcurrentgenerated,inducingotherBpowerstationnearby,Cpowerstationtransformersarerunninga"andshouldsurg
8、e"(sympatheticinrush)andfalsetripping,resultinginalargeareapowerfailure;largeinrushcurrentvalueof1.4wouldresultinelectricpowertransformersandcircuitbreakersduetoexcessivedamage;1.5-induce
