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  • support@powerworld.comhttp://www.powerworld.com

    2001SouthFirstStreetChampaign,Illinois61820+1(217)384.6330

    2001SouthFirstStreetChampaign,Illinois61820+1(217)384.6330

    IntroductiontoPowerWorldSimulator:InterfaceandCommonTools

    I13:FaultAnalysis

  • 22015PowerWorldCorporationI13:FaultAnalysis

    Analysisofpowersystemparametersresultingfromagroundorlinetolinefaultsomewhereinthesystem

    Simulatorcontainsatoolforanalyzingfaultsinanautomaticfashion

    Canperformsingleandthreephasefaults Faultsmaybeanalyzedoneatatimeorinabatchmode,similartoSimulatorsContingencyAnalysis

    FaultAnalysis

  • 32015PowerWorldCorporationI13:FaultAnalysis

    FaultAnalysisDialogProcessFaultsinBatchMode

    ProcessaSingleFault

  • 42015PowerWorldCorporationI13:FaultAnalysis

    Faulttypesinclude: Singlelinetoground Linetoline Doublelinetoground Threephasebalanced

    Thegeneralfaultanalysistoolcanbeaccessedinrunmodeby:Tools ribbontabFaultAnalysis

    FaultAnalysis

  • 52015PowerWorldCorporationI13:FaultAnalysis

    OpenB7FaultExample.pwb Nosequencedataexists,soallfaultanalysisdatafieldsaresettodefaults

    RuntheFaultAnalysistoolfromrunmodeby:Tools ribbontabFaultAnalysis

    ClicktheLoadData button Confirmreplacingsequencedata LoadB7FaultExample.aux

    Example

  • 62015PowerWorldCorporationI13:FaultAnalysis

    Formats PowerWorldAuxiliaryfile(*.aux) PTISequenceDatafile(*.seq)

    Sequencedatacansimilarlybesavedtothesametypesofexternalfiles;however,Simulatorwillstoresequencedatawiththeloadflowcase(*.pwb)ifyousavethecaseafterloadingthesequencedata

    SequenceDataforFaultAnalysis

  • 72015PowerWorldCorporationI13:FaultAnalysis

    FaultDialog:SequenceData

    Mutualimpedancerecord(loadedfromaux)

    Specificdataforeachobjecttypeonthesetabs

    Loadandsavesequencedataasatextfile(*.auxorPTI*.seq)

  • 82015PowerWorldCorporationI13:FaultAnalysis

    Simulatordefaultszerosequenceparametersto2.5timesthepositivesequenceimpedances

    PTIassumesthatareopeninthezerosequencemodelifnozerosequencedataisspecifiedinthe*.seqdatafile Whenreadingin*.seqfiles,Simulatorgivestheabilitytoassumethisbehavior

    SequenceDataforFaultAnalysis

  • 92015PowerWorldCorporationI13:FaultAnalysis

    Sequencedataisrequiredforvariousdevices: Generators

    Internalsequenceimpedances Neutraltogroundimpedance

    TransmissionLines Zerosequenceimpedance Zerosequencelineshuntadmittance

    SequenceDataforFaultAnalysis

  • 102015PowerWorldCorporationI13:FaultAnalysis

    Transformers Zerosequenceimpedanceandlineshuntadmittance Phaseshifts,enteredasPhaseintheloadflowdata Transformergroundingconfiguration,asacombinationofWye,GroundedWye,andDeltaconnections

    Loads Negativeandzerosequenceload,asanadmittance Setonabusbasis,withadmittancegivenistotaladmittanceforallloadsatthatbus

    SequenceDataforFaultAnalysis

  • 112015PowerWorldCorporationI13:FaultAnalysis

    Transmissionlinemutualimpedance(zerosequencemutualimpedancebetweenpartoralloftwotransmissionlines)

    Faultdataforalldevices(exceptmutualimpedances)canbeenteredontheInformationDialogs

    SequenceDataforFaultAnalysis

  • 122015PowerWorldCorporationI13:FaultAnalysis

    SwitchtotheSingleFault page,andchooseFaultedBusnumber3

    Leaveasbusfault,singlelinetoground,zerofaultimpedance

    ClickCalculate Thecasewillbesolvedfirsttomakesuretheanalysiswillbevalid

    Thefaultanalysiscalculationisalinearizedcalculationabouttheoperatingpoint

    SingleFault

  • 132015PowerWorldCorporationI13:FaultAnalysis

    FaultDialog:SingleFault

    Choosefaulteddevice:listdependson

    location(busorinlinefault)

    Locationandtypeoffault

    DetailedResults:Displayedinthegridsonthesetabs

    SummaryResults:FaultCurrent

  • 142015PowerWorldCorporationI13:FaultAnalysis

    Determineswhichcalculationstoperform Singlelinetoground:assumesphaseAtoground Linetoline:assumesphaseBtophaseC Doublelinetoground:assumesphaseBtophaseCtoground

    Threephasebalanced Anonzeroimpedancetogroundmayalsobespecified;defaultis0(exceptforlinetoline)

    FaultType

  • 152015PowerWorldCorporationI13:FaultAnalysis

    ResultsaredisplayedonsixtabsheetsontheSingleFault page Perphasebusvoltagemagnitude(p.u.),angle(deg.),andTheveninImpedance(atthefaultbus,addcolumnstodisplay)

    Perphasebranchfromandtobuscurrentmagnitude,withcurrentdirectionatBOTHendsdefinedAWAYfromtheterminalbus

    Perphasegeneratorcurrentmagnitudeandangle(deg.),withcurrentdirectiondefinedOUTofthegenerator

    Perphaseloadandswitchedshuntmagnitude,withcurrentdirectiondefinedAWAYfromtheterminalbus

    Ybusmatrices

    SingleFault:Results

  • 162015PowerWorldCorporationI13:FaultAnalysis

    Faultvoltagesandcurrentscanbevisualizedonaonelinediagram OntheOptions page,selectasinglephaseorAllPhasesfromtheOnelineDisplay optiongroup

    WhenasinglephaseorAllPhasesisselected,Simulatorsearchesforandreplacesthefollowingtypesoftextfieldsontheonelinediagram:

    VisualizationofResults

  • 172015PowerWorldCorporationI13:FaultAnalysis

    Busvoltagefieldsreplacedwithphasevoltagemagnitude(s)inp.u.

    Busanglefieldsreplacedwithphasevoltageangle(s)indegrees

    BranchMWorAmpfieldsreplacedwithphasecurrentmagnitude(s)inAmpsorp.u.,asspecified

    BranchMVARfieldsreplacedwithphasecurrentangle(s)indegrees

    GeneratorMWfieldsreplacedwithphasecurrentmagnitude(s)inAmpsorp.u.,asspecified

    GeneratorMVARfieldsreplacedwithphasecurrentangle(s)indegrees

    VisualizationofResults

  • 182015PowerWorldCorporationI13:FaultAnalysis

    FaultDialog:Options

    SetOnelineDisplaytoPhaseA

    CanchoosePreFaultProfile(defaultisSolvedPowerFlow);recalculatefaultifchangesaremade

    EnabledOptionsdependonselectedPreFaultProfile

  • 192015PowerWorldCorporationI13:FaultAnalysis

    VisualizationofResultsOnlyfieldsswitchedtofaultanalysisresultswillremainononeline

    Currentsshownaremagnitudeonly;wouldneedtoincludeanglestodeterminedirection

    OptiononSingleFaultpagetoset

    UnitstoAmps

  • 202015PowerWorldCorporationI13:FaultAnalysis

    ThephaseofthefaultdatadisplayedonthediagramcanbequicklytoggledtoadifferentphasebyclickingonthedropdownarrowontheFaultAnalysistoolbarbuttonandchoosinganewvisualizationsetting

    VisualizationofResults

  • 212015PowerWorldCorporationI13:FaultAnalysis

    FaultLocationmaybesetontheFaultAnalysisDialogSingleFault page

    Alternately,youcanrightclickonabusortransmissionlineontheonelinediagram,andselectFaultfromthemenutohavethefaultlocationfieldsautomaticallyset SelectingFaultforabuswillsetthebusnumberfield SelectingFaultforatransmissionlinewillsetthefromandtobusnumbers,thecircuitidentifier,andtheapproximatelinelocationasapercentageofthelengthoftheline

    Anyofthesefieldscanstillbechangedmanually

    SettingtheFaultLocation:BusorInLine

  • 222015PowerWorldCorporationI13:FaultAnalysis

    CalculatedbasedonalocationgivenasapercentagedistancefromtheFromendoftheline

    Insertsatemporarybusandlinesegmentsrepresentingthefaultpointoftheline;reflectedontheonelinediagram

    Calculationsperformedthesameasabusfaultatthetemporarybus

    Example:setFaultLocationasinline,onthebranchbetweenbuses3and4,at50%downtheline

    InLineFault

  • 232015PowerWorldCorporationI13:FaultAnalysis

    InLineFaultLocation

    TemporaryBusforfaultlocation FaultCurrentattemporarybus

  • 242015PowerWorldCorporationI13:FaultAnalysis

    SelecttheFaultDefinitionspagetoanalyzemultiplefaultsinbatchmode,similartoContingencyAnalysis

    ClicktheAutoinsertbutton ChooseSinglebus andkeeptheotherdefaults ClickDoInsertFaultrecords

    Canalsoinsertfaultsmanually

    ProcessingMultipleFaults:FaultDefinitions

  • 252015PowerWorldCorporationI13:FaultAnalysis

    AutoInsertoptionssimilartothoseinContingencyAnalysis

    AutoInsert

    Saveautoinsertoptionstoauxfile

  • 262015PowerWorldCorporationI13:FaultAnalysis

    ClickRunFaults

    FaultDefinitionsSpecifylocation(Inlinefaultsonly) Faultimpedance

    Select2differentFaultTypes;defaultsare3phasebalanced

    andsinglelinetoground

    Onlyspecificresultsavailable:faultcurrentsandTheveninimpedances

  • 272015PowerWorldCorporationI13:FaultAnalysis

    Thefaultanalysisformcanbeclosedwhileafaultiscalculatedwithoutclearingthefault;thevalueswillremaininmemoryuntilmanuallyclearedorthecaseissavedorclosed

    ADoubleLinefaultautomaticallyusesaFaultImpedanceof999+j999andignorestheFaultImpedancesettings;useaDoubleLinetoGroundfaulttospecifyadesiredFaultImpedance

    FaultAnalysis:FinalNotes

  • 282015PowerWorldCorporationI13:FaultAnalysis

    Beforevisualizingfaultanalysiscurrentsinp.u.,youmayneedtofirstchangethenumberofdecimalplacesforthebranchandgeneratorMWandMVARfields

    OnceSequenceDataisloadedfromanexternalfile,savingthecasefilewillstorethesequencedatawiththe*.pwbaswell

    FaultAnalysis:FinalNotes