简介：摘要：10kV变配电室的主要作用为将电网的电能输送至用户。变配电室的高低压开关以及电气设备的选择属于一项十分复杂的工作，对变配电室的高低压开关以及电气设备进行选择需全方位地掌握开关自身的功能以及各项参数，综合地分析配电网的现状以及发展趋势，并对电力系统的具体运行状况进行综合的选择，确保配电系统供电的可靠性，从而为用户提供更好的服务。基于此目的，本文主要对10kV变配电室高低压开关及电气设备进行了简要地分析，希望可以为相关工作人员提供一定的参考。

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简介：AccordingtothesourcefromtheConstructionDepartmentofMinistryofEnergy,itisplannedtoaddinnationwidethisyear55mediumandlargesizedpowergeneratingsetstotaled

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

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

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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：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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