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1、1AHeuristicMethodforReactivePowerServiceProcurementIsmaelEl-Samahy,StudentMemberIEEE,KankarBhattacharya,SeniorMemberIEEE,ClaudioCañizares,SeniorMemberIEEEpowerwithinthepowerfactorrangeof0.9laggingto0.95Abstract—Thispaperproposesanovelheuristicalgorithmthatleading[6].Beyondtheselimits,thegen
2、eratorsgetpaidforhelpsalleviatetheneedforintegervariablesinareactivepowerreactivepowerincludingalossopportunitycostpayment.procurementmodelforanIndependentSystemOperatorinIn[4],atwo-stepapproachtoprocurementofreactivederegulatedelectricitymarkets.Theheuristicschemeworksonapowerhasbeenpropos
3、ed.Inthefirststage,themarginalthree-stepapproachinvolvingthecalculationofmarginalbenefitsandthemaximizationofasocialwelfarefunctionthatisbenefitofeachreactivepowerbidwithrespecttototalsystemdependentontheappropriateLagrangemultiplierspertainingtolosseswasdetermined;andthen,anOPF-basedmodelt
4、hegenerator’scapabilitycurve.Theproposedschemereducesmaximizingasocialwelfarefunction(SW)wassolvedtothecomputationalburdensignificantlyandmakesiteasytodeterminetheoptimalreactivepowerprocurement.Thisworkimplementinrealsizedpowersystems.Themodelistestedontheinvolvedsolvingalarge-scalemixed-i
5、ntegernon-linearCIGRE32-bussystem,anddetailedsimulationresultsvalidateprogramming(MINLP)model.Suchamodelwasnecessarytheapplicabilityoftheproposedmodel.becauseofthediscretechoiceofregionsforreactivepowerprovisionswithinagenerator’scapabilitydomain.I.INTRODUCTIONInthispaper,anovelthree-stephe
6、uristicscheme[7],thatiseasytoimplement,isproposedthatalleviatestheneedforEACTIVEpowerprovisionandprocurementareessentialRintegervariablesforthechoiceofreactivepowerregions,andfunctionsofanIndependentSystemOperators(ISO)inhencereducesthecomputationalburdensubstantially.Inderegulatedelectrici
7、tymarkets.VariousworkshavebeenSectionII,theproposedschemeisdiscussedindetail,andinreportedintheliterature[1-4]pertainingtodesigningmarketsSectionIII,analyticalstudiesarecarriedoutontheCIGRE32-fortheseservices,theirpricingandmanagement.Mostofbussystem,and
