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1、InternationalJournalofComputerandElectricalEngineering,Vol.1,No.1,April20091793-8198TheuseofFactsdevicesindisturbedPowerSystems-Modeling,Interface,andCaseStudySalim.Haddad,A.Haddouche,andH.Bouyedaandreactivelineflows(P,Q).Abstract—ThispaperdescribesthetheoryandsimulationbyThephaseangleregulatortyp
2、ecanbeusedtocontrolmatlabofflexibleAlternativeCurrentTransmissionSystemsactivepowerflow.(FACTS)devicesusedinthedisturbedpowersystems.OneofTable(1)liststheseveraltypesofexistingandproposedthesedevices,UnifiedPowerFlowController(UPFC)willbeFACTSdevices.ThesetypesaretermedA,B,andChereforchosenforaspe
3、cificapplication,detailedinthispaper.convenience.[5]SimulationinvestigatetheeffectofUPFConthevoltageoftherelatedbus,it’salsoconsiderstheeffectontheamountTABLEI:TYPESOFFACTSDEVICEMODELSactiveandreactivepowerflowingthroughthetransmissionsystem.TypeParameterFACTSdevicesFinallysimulationresultshavebee
4、npresentedtoindicatethedesignationcontrolledimprovementintheperformanceoftheUPFCtocontrolvoltageTypeASeriesPandQUPFCindisturbedpowersystems.TCSC,phaseTypeBSeriesPangleregulatorIndexTerms—Facts,UPFC,PowerSystems,disturbances,TypeCSeriesQSVC,STATCONInterface,Modelling,Controls.Thesefiguresshowtypes(
5、a),(b),and(c)FACTSdevicesI.INTRODUCTIONThepowerelectronicbasedflexibleACtransmissionsystems(FACTS)havebeendevelopedandusedaseconomicalandefficientmeanstocontrolthepowertransferintheinterconnectedACtransmissionsystems[1].Thisallowsforcingthepowertransitinthelineswithhighertransmissioncapacity[2],[3
6、].AmongtheFACTScomponents,UnifiedPowerFlowController(UPFC),isthemostcomplete.Itisabletocontrolindependentlythethroughputactiveandreactivepowers.TheUPFCiscapabletoactoverthreebasicelectricalsystem(a)parameters[4]:linevoltage,lineimpedance,andphaseangle,whichdeterminethetransmittedpower.PowerFlowthr
7、oughanalternativecurrentlineisafunctionofthelineimpedance,themagnitudeofthesending-endandreceiving-endvoltageandthephaseanglebetweenthesevoltages[4].Thepowerflowcanbeincreased,firstlybydecreasingthelineimpedancew
