Azzougui, Yasmina2018-12-312018-12-312018https://dspace.univ-boumerdes.dz/handle/123456789/5335125 p. : ill. ; 30 cmThecurrentpowersystemisfacingalotofissues,whichmakes thepower gridunstable;fromharmonics,incapabilitytoprovideasmuchpowerasthe demand,toblackouts.Existingtoolsmustbeimprovedandnew toolsmust bedevelopedtoavoidthesepowersystemperturbations.The aimofthis thesisistoproposeoptimizationsinsomeofthesmartgridareas.Threeori- entationsarestudied:powercontrolconcerntobalancebetweenthedemand andthesupply,solvingsomepowerqualityproblemswiththe integrationof renewableenergies,PhasorMeasurementUnitplacementinwide areamon- itoringforfullobservabilityandfaultlocation. First,aloadpowercontroloptimizationisproposedinthesmarthome applications.Theideaistobalancebetweenthesupplyandthedemandso thatblackoutsareavoided.Theworkisachievedbyimplementingasmall powercontrolsystemofhomeappliances,andTaguchioptimizationisexe- cutedtoreschedulesometasksifthepowerdemandexceedssome predefined peaklevelvalue.Thisworkconcernsadiscreteproblemoftype difficult. Second,theintegrationofrenewableenergiestoovercomesomepower qualityissuesisproposed.Inthiswork,wereliedontheMoth-Flameop- timizationtechniquetosolvetheselectiveharmoniceliminationproblemin conjunctionwithareductioninthetotalharmonicdistortionoftheoverall system.Thisworkconcernsaproblemoftypedifficultwherethe solutions areoftypereal. Finally,anoptimizationtechniquetominimizethenumberof PMUsin WideAreamonitoringSystemsisproposed.GreyWolfOptimizationtech- niqueisusedtofindtheminimumnumberofPMUsrequiredtoachievethe fullobservabilityforfaultdetectioninsomestandardized IEEEbussystems. Next,TheAlgerianNetworkthatconsistsof63buseswasalsotested.The simulationsarecarriedoutusingMATLAB/SIMULINK.Thisworkconcerns a binaryproblemoftypedifficultenSystem designEnergy managementThesis