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1、CIGRÉ1996:14-302ODYNAMICALPERFORMANCEOFTCSCSCHEMESLennartÄngquist*,GunnarIngeström,Hans-ÅkeJönssonABBPowerSystemsABSwedenSummary:Thepaperdescribesacontrolmethod,Syn-andthatfieldexperiencehasbeengainedsince1991[1],chronousVoltageReversal(SVR),whichcanbeappliedwhenthefirstvalvewasputi
2、ntoserviceinahigh-toThyristorControlledSeriesCapacitors(TCSC).SVRvoltagetransmissionsystem.Thusoneimportantob-ischaracterisedbyahierarchicalstructureofthecontrol.staclefortheintroductionofthisnewtechnologyhasFromthelowesttothehighestlevelthelayersbeenremovedasfieldexperienceshowstha
3、titispos-contributewithapparentimpedancecharacteristicsatsibletodesignandoperatethyristorvalvesthatarein-subsynchronousfrequencies,apparentreactanceatmainsstalledoutdoorsinhigh-voltageswitchyardswithgoodfrequencyandpower-systemrelatedcontrolobjectives.operationalrecords.Thepaperdesc
4、ribeshowsuchacontrolschemecanbederivedbasedonaconceptualdescriptionoftheTCSCoperation.2.TCSCAPPLICATIONSINPOWERSYSTEMSKeywords:seriescapacitor,thyristorcontrolledseriescapacitor,apparentimpedance,subsynchronousSeveralstudiesontheuseofcontrollabledevicescon-resonance,synchronousvolta
5、gereversal,TCSC,SSR,nectedinserieswiththeline(TCSC,PAR,UPFC)SVRshowthattheyhavesomeadvantageouscontrolpropertieswhencomparedwithshuntdevices[2-6].ThecontrolofferedbyTCSCisan‘impedance’type1.INTRODUCTIONcontrol,i.e.theinsertedvoltageisproportionaltolinecurrent.Thistypeofcontrolnormal
6、lyisbestsuitedtoTheThyristorControlledSeriesCapacitor(TCSC)applicationsinpowerflowcorridors,whereawell-seemstobeoneofthememberswithintheFACTSdefinedphaseangledifferenceexistsbetweentheendsoffamily,besidetheSVCthatwasestablishedlongago,thetransmissionlinetobecompensatedandcontrolled.
7、whichhasattractedthemostinterestsofar.OnereasonmaybethatadistinctivequalityoftheTCSCconceptisTheconceptofcontrolledseriescompensationcanbethatitusesanextremelysimplemaincircuittopology.usedforawiderangeofobjectivesinthepowersystemThecapacitorisinserteddirectlyinserieswiththecontrolt
8、echnology.Naturally
