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1、Tobepresentedat:VSEPOPERecife,Brasil19May,1996ITAIPUHVDCTRANSMISSIONSYSTEM10YEARSOPERATIONALEXPERIENCEA.PRAÇAH.ARAKAKIS.R.ALVESK.ERIKSSONJ.GRAHAMG.BILEDTFURNASCentraisElétricasABBPowerSystemsBrazilSwedenABSTRACTFigure1isasimplifiedone-linediagramshowingtheTheItaipuHVDCsystemhasnowtransmi
2、ttedpowerinterconnectionoftheItaipupowerplantwithfor10years.Thescheme,designedin1979,includesSouth/SoutheastBrazilthroughtheFURNASmanyfeaturesnewatthetimeandcontinuestobethetransmissionsystem.largestHVDCtransmission,inbothrating,6,300MW,andvoltage,±600kV.MajoroperatingFozIvaiporãItaberáT
3、.Pretofeatures,presentuse,significantexperiencesand500kV765kV765kV765kV765kV500kVavailabilityperformancearediscussed.Sincefinal9x700MWcommissioningithasshownexcellentperformanceunits345kVSwithaforcedoutageunavailabilitybelowhalfaouthpercent.Itaipuea60HzsteSOUTHrnSYSTEMSKeywords:Powertran
4、smission,HVDC,Itaipu,ItaipuFoz2ysIbiúnate500kV500kV345mkV9x700MWBipole1+/-600kV1.INTRODUCTIONunitsBipole2+/-600kVThispaperdescribestheexperiencesoftheItaipuItaipu50HzHVDCsystemduringthefirsttenyearsofoperation.ParaguayanSystemThepresentuseofthetransmissionandthesystemdynamicperformanceis
5、discussed,togetherwithFigure1.Simplifieddiagramofthesignificanteventsandavailabilityperformance.ItaipuTransmissionSystemTheItaipupowerplantisaBrazilianParaguayanjointventurewithatotalinstalledcapacityof12,600MW,StudiesindicatedahybridsolutionforthepowerthemajorityofwhichistransmittedtoSo
6、utheasterntransmission,thepowerfromthe60HzgeneratorsBrazil,thatisabout28%ofthetotalsystemcapacity.transmittedbyAClinesviaintermediatestationsandDuetothedifferenceinfrequenciesofthetwothepowerfromthe50Hzgeneratorstransmittedbycountries,halfofthegenerationisat50HzanHVDCsystem.(Paraguay)and
7、halfat60Hz(Brazil).TheItaipu60Hz765kVHVACtransmissionsystem2.THEUSEOFTHEHVDCTRANSMISSIONisoperatingovertwoseriescompensatedlineswiththeaidofadigitalemergencycontrolscheme(ECS)TheintegratedsystemofSouth-SoutheasternBraziltomatchgenerationandtransmissioncapabilityinhadapeak
