Supervisory level neural network identifier for a small powe

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1、SupervisoryLevelNeuralNetworkIdentifierforaSmallPowerSystemwithaSTATCOMandaGenerator'SalmanMohagheghi,'RonaldG.Harleyand'GaneshKVenayagamoorthyISchoolofElectricalandComputerEngineeringDepartmentofElectricalandComputerEngineeringGeorgiaInstituteofTechnologyUni

2、versityofMissouri-RollaAtlantaGA30332-0250USARollaMO65409-0249USArharlcvl~ecc.satech.cdugkumariZieee.orgAbshcr-AneuralnetworkbasedidentifierisdesignedfureffectivecontroloiasmallpowersystemThepowernetworkinthisworkisconsideredfromanexternalpointofview,i.e.,fro

3、masupervisorylevel.Suchaneuroidentitiercanserveasageneralmodelofsuchaplant,andthenusedfurdifTerentneuralnetworkbasedcontrolschemes.I."IRODUCTIONApowersystemconsistsofcomponentssuchasgenerators,lines,loads,andcompensators.Thecompensatorsareshuntorserieselement

4、ssuchascapacitorsandinductorsorconvertercontrolledFlexibleACTransmissionSystem(FACTS)devices.Untilnow,designsoftheinternalcontrollersofagenerator(voltageregulatorandgovernor)havetypicallyconsideredonlythegeneratorandignoredothercontrolleddevicesinthepowernetw

5、ork.Similarly,designersofFACTSdevicecontrollersconsideronlytheFACTSdeviceandignoreneighboringgeneratorcontrollersforexample.Synchronousgeneratorsaretraditionallycontrolledbyautomaticvoltageregulator(AVR)whichmaintainsthedesiredvoltageattheterminalsofthegenera

6、tors,andthespeedgovernorwhichregulatesthesteamvalvepositioninordertomaintainconstantspeed.BothAVRandgovernorcontributetothedampingofspeeddeviations.[l]STATCOMsarepowerelectronicbasedshuntconnectedFACTSdeviceswhichcancontrolthelinevoltageVatthepointofconnectio

7、ntotheelectricpowernetwork.Regulatingreactivepowerinjectedintothenetworkandtheactivepowerdrawnfromitbythisdevice,providescontroloverthelines"p.NI.0.)c.mdLll"i*ll.lrmrml~%lonL0.I.SvoltageandovertheDCbusvoltageinsidethedeviceR.gullt*Por.rFlorrespectively[2].Tra

8、ditionally,thecontrollerdesignfortheSTATCOM,aswellasforthesynchronousgenerator,haverangedfrom0-7803-8359-1/04/$20.0002004IEEE2901AsupervisorycontrolschemecanguaranteethatateachSUPERVISORY