简介：提出了一种基于视讯技术的变电站智能巡检系统,包括接口层、服务层、应用层,并对系统架构及其功能进行了详细介绍。该系统不仅实现了视讯技术与变电站巡检技术的高效结合,通过联动控制,真正实现了变电站的智能监控;还实现了变电站分散辅助巡检系统的集成联动,提高了变电站的管理水平和运行质量,真正实现了变电站的无人或者少人值守。

简介：设计了基于光纤环形以太网的变电站和漏电火灾报警的远程监视系统,给出了系统的网络结构。通过工业控制机平台,采用MODBUSTCP/IP和MODBUSRTU等通讯协议,实现对变电站和漏电火灾报警的远程实时监控。

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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：我国大型电站锅炉迅速发展,其可靠性和经济性都达到了较好的水平.按不同煤种分析现有各类锅炉的运行状况可见,切圆燃烧锅炉炉膛出口烟气能量不平衡问题已基本解决,NO<,x>的排放浓度相对较低;墙式燃烧锅炉的NO<,x>较高,并有一些锅炉存在炉内结渣等问题;低挥发分煤锅炉运行的可靠性、经济性和NO<,x>排放问题较为突出;在锅炉的选型上也必须留有足够的余量.

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