PowerSystemDynamicsandStability1UniversidaddeCastilla-LaManchaPowerSystemDynamicsandStabilityDr.FedericoMilanoE-mail:Federico.Milano@uclm.esTel.:+34926295219DepartamentodeIngenier´ıaEl´ectrica,Electr´onica,Autom´aticayComunicacionesEscuelaT´ecnicaSuperiordeIngenierosIndustrialesJune26,2008Introduction-1PowerSystemDynamicsandStability2UniversidaddeCastilla-LaManchaProgramadeDoctoradoTechnicalandEconomicalManagementofGeneration,TransmissionandDistributionElectricEnergySystems´AreadeIngenier´ıaEl´ectricadelaE.T.S.deIngenierosIndustrialesdelaUniversidaddeCastilla-LaManchaJune26,2008Introduction-2PowerSystemDynamicsandStability3UniversidaddeCastilla-LaManchaNote➠ThiscourseispartlybasedonthecourseECE664holdbyProf.Dr.C.Ca˜nizaresattheUniversityofWaterloo,Ontario,Canada.➠IwishtosincerelythankProf.Dr.C.Ca˜nizaresforhiscourtesyinsharingthismaterial.June26,2008Introduction-3PowerSystemDynamicsandStability4UniversidaddeCastilla-LaManchaObjectives➠Understandthemodelingandsimulationofpowersystemsfromphasoranalysistoelectromagnetictransients.➠Discussthebasicdefinitions,conceptsandtoolsforstabilitystudiesofpowersystems.➠Familiarizewithbasicconceptsofcomputermodellingofelectricalpowersystems.June26,2008Introduction-4PowerSystemDynamicsandStability5UniversidaddeCastilla-LaManchaOutlines:SystemModeling➠Synchronousmachine.➠Transformer.➠Transmissionline.➠Cable.➠Loads.June26,2008Introduction-5PowerSystemDynamicsandStability6UniversidaddeCastilla-LaManchaOutlines:SystemAnalysis➠Basicstabilityconcepts:➛Nonlinearsystems.➛Equilibriumpoints.➛Stabilityregions.➠PowerFlow:➛Systemmodel.➛Equationsandsolutiontechniques.➛Contingencyanalysis.June26,2008Introduction-6PowerSystemDynamicsandStability7UniversidaddeCastilla-LaManchaOutlines:VoltageStability➠Definitions.➠Basicconcepts:➛Saddle-nodebifurcation.➛Limit-inducedbifurcation.➠ContinuationPowerFlow(CPF).➠Directmethods.➠Indices.➠Protectionsandcontrols.➠Realcaseexample:August2003NorthAmericanblackout.June26,2008Introduction-7PowerSystemDynamicsandStability8UniversidaddeCastilla-LaManchaOutlines:AngleStability➠Definitions.➠Small-disturbance:➛HopfBifurcations.➛Controlandmitigation.➛Practicalapplications.➠TransientStability(large-disturbance):➛Timedomain.➛DirectMethods:➳EqualAreaCriterion.➳EnergyFunctions.➠Realcaseexample:May1997Chileanblackout.June26,2008Introduction-8PowerSystemDynamicsandStability9UniversidaddeCastilla-LaManchaOutlines:FrequencyStability➠Definitions.➠Basicconcepts.➠Protectionsandcontrols.➠Realcaseexample:October2003Italianblackout.➠Realcaseexample:November2006Europeanblackout.June26,2008Introduction-9PowerSystemDynamicsandStability10UniversidaddeCastilla-LaManchaOutlines:SoftwareTools➠Outlines.➠UWPFLOW.➠Matlab.➠PSAT.June26,2008Introduction-10PowerSystemDynamicsandStability11UniversidaddeCastilla-LaManchaReferences➠P.Kundur,Powersystemstabilityandcontrol,McGrawHill,1994.➠P.SauerandM.Pai,Powersystemdynamicsandstability,PrenticeHall,1998.➠A.R.BergenandV.Vittal,Powersystemsanalysis,SecondEdition,Prentice-Hall,2000.➠C.A.Caizares,Editor,Voltagestabilityassessment:concepts,practicesandtools,IEEE-PESPowerSystemStabilitySubcommitteeSpecialPublication,SP101PSS,May2003.June26,2008Introduction-11PowerSystemDynamicsandStability12UniversidaddeCastilla-LaManchaReferences➠P.M.AndersonandA.A.Fouad,Powersystemcontrolandstability,IEEEPress,1994.➠J.ArrillagaandC.P.Arnold,Computeranalysisofpowersystems,JohnWiley,1990.➠I.S.Duff,A.M.ErismanandJ.K.Reid,DirectMethodsforSparseMatrices,OxfordSciencePublications,1986.➠J.StoerandR.Bulirsch,IntroductiontoNumericalAnalysis,SecondEdition,Springer-Verlag,1993.June26,2008Introduction-12PowerSystemDynamicsandStability13UniversidaddeCastilla-LaManchaReferences➠M.Ili´candJ.Zaborszky,DynamicsandControlofLargeElectricPowerSystems,Wiley,NewYork,2000.➠C.A.Ca˜nizares,UWPFLOW,availableat➠F.Milano,PSAT,PowerSystemAnalysisToolbox,availableat➠Journalpapersandtechnicalreports.➠Coursenotesavailableonline.June26,2008Introduction-13PowerSystemDynamicsandStability14UniversidaddeCastilla-LaManchaEvaluation➠Twoprojectsarerequired.➠Theprojectsconcentratesinthevarioustopicsdiscussedinclass.➠ThesewillrequiretheuseofMATLAB,PSATandUWPFLOW(thelasttwoarefreesoftwareforstabilitystudiesco-developedattheUniversityofWaterloo,Canada).➛ReproducingexamplespresentedintheslidesusingUWPFLOWandMATLAB.➛StabilityanalysisoftheIEEE14-bustestsystemusingPSAT.June26,2008Introduction-14PowerSystemDynamicsandStability15UniversidaddeCastilla-LaManchaEvaluation➠Alternatively,thestudentscandevelopa“userdefinedmodel”inPSAT.➠InterestedstudentsareinvitedtocontactDr.FedericoMilano.June26,2008Introduction-15PowerSystemDynamicsandStability16UniversidaddeCastilla-LaManchaContents➠Introduction➠GeneratorModeling➠TransmissionSystemModeling➠LoadModeling➠PowerFlowOutlines➠StabilityConcepts➠VoltageStability➠AngleStability➠FrequencyStability➠SoftwareTools➠ProjectsJune26,2008Introduction-16PowerSystemDynamicsandStability17UniversidaddeCastilla-LaManchaGeneratorModeling➠Generatorover