欢迎来到天天文库
浏览记录
ID:30785994
大小:424.45 KB
页数:10页
时间:2019-01-03
《【精品】机械专业英语论文》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、Theoriginal126kVVacuumCircuitBreakerDebutedinChinaJimeiWang(DepartmentofEIectricaIEngineering,Xi1anJiaotongUniversityXi1an710049,ShaanxiProvinee,P.R.China)Abstract-Asinglebreak126kVvacuumcircuitbreakerdebutedinChinaisintroduced.Configurationof126kVvacuumcircuitbreakerandconfigura
2、tionofitseIectrodeareiIIustrated.Particularly,siIiconeoiIisusedasexternalinsuIationofvacuuminterrupters.Heatradiatorsaredesignedforraisingratedcurrent.PermanentmagnetactuatorswithIongstrokearedeveIopedforimprovingperformsneeofthevacuumcircuitbreaker・I.INTRODUCTIONAprojectofresear
3、chinganddeveloping126kVsinglebreakvacuumcircuitbreakerisbeingdonebycooperationofX「anJiaotongUniversity,vacuuminterruptermanufacturersandvacuumswitchgearfactoriesinChinaIttooknearlysixteenmonthstofinishaprototype.ItsmaintechnicalobjectivesareshowninTable1・TABLE1Maintechnicalobject
4、ivesof126kVvacuumcircuitbreaker.No.TechnicalparametersVallieUnit1Ratedvoltage126kV.nns2Ratedfrequency50Hz3Nominalratedcurrent2000A,nns4Ratedshortcircuitbreakingcurrent40kA,nns■DCcomponentofasymmetricalbreakingcurrentS32%6Ratedshortcircuitmakingcurrent100kA.peak7Ratedshorttimewith
5、standcurrent(4seconds)40kA.nns8Powerfrequencywithstandvoltage()minute)230kV,mis9Impulsewithstandvoltage(1.2X50rs)55()kV、peak10Permissibletemperatureofterminal-406、imumcontacterosion2mmII.CONFIGURATIONOF126kVVACUUMCIRCUITBREAKERThe126kVsinglebreakvacuumcircuitbreakerprototypeisshowninFig.1,whichshowsthreevacuuminterruptersareindividuallyassembledineachporcelainbushing1.Porcelaininsulatingsupport2ismountedonahorizontalsteelbracket3,andthreep7、ermanentmagnetactuators4areseparatelyinstalledattheendofeachinsulatingporcelaininsulatingsupport2,whichareelectronicallycontrolledbycontrolbox5,thussynchronizationswitchingcouldberealized.Twosteelvacuuminterrupterthatisassembledinporcelainbushing?2-porcelaininsulationsupporters,38、-horizontalsteelbracket,4-permanentmagne
6、imumcontacterosion2mmII.CONFIGURATIONOF126kVVACUUMCIRCUITBREAKERThe126kVsinglebreakvacuumcircuitbreakerprototypeisshowninFig.1,whichshowsthreevacuuminterruptersareindividuallyassembledineachporcelainbushing1.Porcelaininsulatingsupport2ismountedonahorizontalsteelbracket3,andthreep
7、ermanentmagnetactuators4areseparatelyinstalledattheendofeachinsulatingporcelaininsulatingsupport2,whichareelectronicallycontrolledbycontrolbox5,thussynchronizationswitchingcouldberealized.Twosteelvacuuminterrupterthatisassembledinporcelainbushing?2-porcelaininsulationsupporters,3
8、-horizontalsteelbracket,4-permanentmagne
此文档下载收益归作者所有