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简介：OnNovember13,thesubject'ResearchandDevelopmentofHardwareCompletedfor1000-kVACUltra-HighVoltageTransmissionProject:PartLineHardware'arrangedbyJiangsuElectricPowerCompanypassedtheacceptanceofanexpertgrouporganizedbytheStateGridCorporation.

简介：Beingabundantinhydropower,coal,windenergyandsolarenergyetc.,NorthwestChinaisanimportantenergybasewithgreatpotential.Inrecentyears,alongwiththevigorousdevelopmentoftheenergybase,the

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简介：±５００ＫＶＨＶＤＣＴｒａｎｓｍｉｓｓｉｏｎｐｒｏｊｅｃｔｆｒｏｍＴｉａｎｓｈｅｎｇｑｉａｏｔｏＧｕａｎｇｚｈｏｕＬｉＬｉｃｈｅｎｇ，ＰｅｎｇＢａｏｓｈｕ，ＹｕＪｉａｎｇｕｏ，ＷｕＺｅｈｕｉＰｏｗｅｒＮｅｔｗｏｒｋ，ＣｏｎｓｔｒｕｃｔｉｏｎＤｅｐａｒ...

简介：本文提出了一种以6脉冲可控硅变流器为基础的新的脉冲倍增技术。利用这种新推荐的技术，在输入电流和输出电压这两方面都已获得了12脉冲，18脉冲以及24脉冲运行。提供了一种在整个相角范围内的控制策略以及先进的输入电流和输出电压分析。从实验室原型得到的实验结果，证实了所提出的理论。

简介：Theretrofitprojectof800-kVlargecapacityexperimentsysteminXi'anHighVoltageEquipmentResearchInstitutewascompletedsometimeago.Thesystemcanmeetrequirementsofwholepoleexperimentof550-kV63-kAand800-kV63-kAcircuitbreakersbyIECNorm.Itscapacitortowerisover100tinweightand15minheight.Thevoltageofeachcapacitorbankcanreach1000kV.

简介：OnJanuary10,2011,the750-kVTurpan-Bayinguolengtransmission-substationprojectofXinjiangpowergrid,officiallywentintooperation.Henceforth,thehardtimeofstaggeringpowerutilizationandlimitingpowerutilizationinpeakperiodinBazhou,Aksu,Kashi,KezhouandHotanfiveprefecturesinsouthXingjiangwillneverreturn.

简介：Helicopterinspectionofultrahighvoltage(UHV)transmissionlineshasunmatchedadvantagescomparedtomanualworkduetotheinspectionangleandhigh-techequipmentonboard,especiallyindetailedinspectionsoftowerheadsanddefect-detectionsinvirtueofinfrared/ultraviolettechniques.Thispaperdealswithsomekeytechnicalproblemsintheinspectionsof1000kVUHVAClineswithahelicopter,suchasthesafedistanceoflive-lineworking,electromagneticfieldintensityandflightcontrol.Basedonthestudyresults,asetofUHVlineinspectionmethodswasworkedoutandappliedtotheinspectionofliveUHVlines.

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简介：基于二维有限元法,分别对磁通切换双凸极电动机（FSPM）的静态场和瞬态场进行了有限元计算,着重探讨了6/7极FSPM结构及特性,并与6/5极FSPM进行对比研究。研究结果表明,6/7极FSPM比6/5极具有更小的齿槽转矩,磁链和反电势波形具有更好的正弦性。

简介：AccordingtothepowersystemplanninginChina,500kVtransmissionlinewillbethetrunksinallregionalnetworksexcepttheNorthwestChinaSystem.Duetoshortofcapitalresources,however,mostofthose500kVtransmissionlinesareandwillbeoperatinginsinglecircuitforquitealongpe-riodoftime.So,tousetheliveworkingtechniqueson500kVlinesisanimportantproblemforstudy.Actually,wehadalreadybegunourstudyonliveworkingon500kVtransmissionlineseveralyearspriortothePing-Wu

简介：局部放电是额定6kV或变高电压的电动机与发电机中发现的大多数定子绕组绝缘劣化机理的表征，因而，对局部放电的测试作为确定这类高压电机定子是否需要维修的一种方法已应用了40多年，由于这种测试的好处越来越为人们所认识，也就有了将局部放电测试应用于4kV电动机与发电机绕组的兴趣，本文论述了可能限制4kV定子测试的理论上的原因，陈述了一系列表明局部放电确实发生的脱线局部放电试验的结果，过去两年中对大约10台4kV电动机上进行的一系列在线局部放电试验的结果表明局部放电只可能发生在由于一些类型的故障机理引起的故障发生之前很短一段时间，因此，为了防止在使用中出现故障，有必要进行连续监测，本文对一种便宜的连续局部放电监控器进行了描述，局部放电监测似乎在只用于非常关键生产过程的电动机及发电机上，才是有成本效益的，因为运行中的可能引起巨大的经济损失。

简介：Thestrengthofthepowerfrequencyelectricintensityandmagneticfieldofthe500-kVdoublecircuittransmissionlineswascalculatedbyusingtheequivalentchargemethodandtheAmpere'sLaw,andtheenvironmentalimpactfactorsofthefieldswereevaluated.Byoptimizingthephasesequence,thefrequencyelectricintensityandmagneticfieldstrengthcanbereduced.Withinadistanceof25mfromthecenterofthetransmissionline,thepowerfrequencyelectricintensityandmagneticfieldstrengthfalloffsharplywiththedistanceincrease.Finally,thebestphasesequenceandtheminimumgroundclearanceofthetransmissionlineswereobtainedtomeettherequirementsoftheleastimpactonenvionment.

简介：OnDecember28,2000,330kVShenmuSubstation,akeyoneof330kVYulin-Shenmupowertransmissionandsubstationprojects,hasbeensuccessfullyputintooperation.Itmarkedthatthewhole330kVtransmissionandsubstationprojectofShaanxi’sextra-highvoltagegridhadbeencompleted.Allthe330k

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简介：ItisacommonpracticeinChinatouseaninsulatedsilkjacklad-derinthelive-lineworktoenterthe500kVEHVelectricfield.WuhanHighVoltageResearchInstitutehassuccessfullycarriedoutsuchoperatingperformanceatthemeetingofESMO-90inCanada.(Fig.1)Theoperatingprocedureisnowrecommendedasfollows.

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