【英文标准名称】:Short-circuitcurrentsind.c.auxiliaryinstallationsinpowerplantsandsubstations-Part2:Calculationofeffects
【原文标准名称】:电厂与变电站直流辅助设施中的短路电流第2部分:效应计算
【标准号】:IEC61660-2-1997
【标准状态】:现行
【国别】:国际
【发布日期】:1997-06
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC73
【标准类型】:()
【标准水平】:()
【中文主题词】:短路电流;直流装置;变电所;开关设备;发电站;计算方法;定义;电气工程;数学计算
【英文主题词】:Currents;Definitions;Directcurrent;Directcurrentinstallations;Effects;Electricpowerstations;Electricalengineering;Electromagnetic;Electromagnetism;Mathematicalcalculations;Methodsofcalculation;Plant;Shortcircuits;Short-circuitcurrents;Substation;Switchgears;Symbols;Thermalproperties;Thermics
【摘要】:ThispartofIEC61660describesamethodforcalculationofthemechanicalandthermaleffectsonrigidconductorscausedbyshort-circuitcurrentsind.c.auxiliaryinstallationsinpowerplantsandsubstations.Suchsystemsmaycontainthefollowingitemsofequipmentwhichactassources,aswellascontributingtotheshort-circuitcurrents:-rectifiersinthree-phasea.c.bridgeconnectionfor50Hz;-stationarylead-acidbatteries;-smoothingcapacitors;-d.c.motorswithindependentexcitation.Thisstandardprovidesamethodwhichhaswideapplication,andwhichgivesresultsofsufficientaccuracy.Thecalculationmethodisbasedonsubstitutefunctions,whichcauseapproximately1hesamemaximumstressesintheconductorsandthesameforcesonthesupportsastheactualelectromagneticforce.Thestandardizedcalculationproceduresofclauses2and3areapplicablefortheelectromagneticeffectonrigidconductorsandthethermaleffectonbareconductorsandelectricalequipment,respectively.Forcablesandinsulatedconductors,however,referenceismadetoIEC60949andIEC60986,forexample.Onlyd.c.auxiliaryinstallationsinpowerplantsandsubstationsaredealtwithinthisstandard.Inparticular,thefollowingpointsshouldbenoted:-Thecalculationofshort-circuitcurrentsshouldbebasedonIEC61660-1.-Short-circuitdurationusedinthisstandarddependsontheprotectionconcept,andshouldbeconsideredinthatsense.-Thesestandardizedproceduresareadjustedtopracticalrequirements,andcontainsimplificationswithsafetymargins.Testingormoredetailedmethodsofcalculationorbothmaybeused.-Inclause2ofthisstandard,onlythestressescausedbyshort-circuitcurrentsarecalculated.Furthermore,otherstressescanexist,suchasthosecausedbydead-load,operatingforces,orearthquakes.Thecombinationoftheseloadswiththeshort-circuitloadingshouldbepartofanagreementand/orgivenbystandards,forexampleerectioncodes.
【中国标准分类号】:F20
【国际标准分类号】:29_240_01
【页数】:75P.;A4
【正文语种】:英语