IEEE C62.92.1-2016_errata to IEEE Guide for the Application of Neutral Grounding英文版

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1、IEEEStdC62.92.1™-2016(RevisionofIEEEStdC62.92.1-2000)ErratatoIEEEGuidefortheApplicationofNeutralGroundinginElectricalUtilitySystems—PartI:IntroductionSponsorSurgeProtectiveDevicesCommitteeoftheIEEEPowerandEnergySocietyCorrectionSheetIssued30November2017Copyright2017byTheInstituteofElectric

2、alandElectronicsEngineers.Inc.Allrightsreserved.Published2017PrintedintheUnitedStatesofAmerica.ThiscorrectionsheetmaybefreelyreproducedanddistributedinordertomaintaintheutilityandcurrencyoftheunderlyingStandard.Thiscorrectionsheetmaynotbesold,licensedorotherwisedistributedforanycommercialpu

3、rposeswhatsoever.Thecontentofthiscorrectionsheetmaynotbemodified.30November2017ProductSTD22421EPage11,changethedefinitionofcoefficientofgrounding(COG)toreadasfollows:coefficientofgrounding(COG):Theratio,ELG/ELL(expressedasapercentage),ofthehighestroot-mean-square(rms)line-to-groundpower-fr

4、equencyvoltageELGonasoundphase,ataselectedlocation,duringafaulttogroundaffectingoneormorephasestotheline-to-linepower-frequencyvoltageELLthatwouldbeobtainedattheselectedlocationwiththefaultremoved.Page13,changetheNotesbelowFigure1toreadasfollows:NOTE1—Va,Vb,andVcaretherespectivesourcevoltag

5、es(line-to-neutral).NOTE2—RSandXSaretheequivalentsourceresistanceandreactance,perphase.NOTE3—RnandXnaretheneutralresistanceandreactanceofthesystemasseenatthesource.NOTE4—Cgisthetotalsystemcapacitancetogroundandisobtainedbyconnectingallthreephasestogetherandmeasuringthecapacitancewiththeneut

6、ralgroundingbranchopen-circuited.NOTE5—Cg/3isthegrounded-wyepartial,orzero-sequence,capacitanceofthesystem.NOTE6—CSistheungroundedwyeequivalentoftheinterphasepartialcapacitancesofthesystem,obtainedbysubtractingthezero-sequencecapacitanceCg/3fromthepositivesequencecapacitanceC1.NOTE7—fisfreq

7、uencyinhertz.NOTE8—TheswitchS,simulatesasingle-line-to-groundfaultona-phase.NOTE9—Vfistheprefaultline-to-groundvoltageatthefault,theenergizationvoltage.Page15,thefirstparagraphundersubclause6.2shouldreadasfollows:Variousclassesofgroundingareavailabletoth