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1、GenerationControlinSmallIsolatedPowerSystemsAmirhosseinHajimiraghaMasterofScienceThesisX-ETS/EME-0509RoyalInstituteofTechnologyDepartmentofElectricalEngineeringStockholm2005AbstractTitle:GenerationControlinSmallIsolatedPowerSystemsKeywords:IsolatedSystem
2、,GenerationControl,Power-LoadControl,VoltageSourceInverter,DistributedGeneration,Microsource,Microgrid,Grid-Connected,Island.Thisthesisisconcernedwiththegenerationcontrolinsmallisolatedpowersystemsconsistingofinverterinterfacedgenerationsystems.Firstthec
3、omponentsofanindividualdistributedgenerationsystem(DGS)aswellasthecorrespondingcontrolschemesforactiveandreactivepowerflowarediscussedandimplemented.ThenthecontributionofmultipleDGStomeettherequirementoftheloadsinbothgrid-connectedandislandoperationsared
4、iscussed.Havingevaluatedtheperformanceofeachdevelopedmodelsuchasvoltagesourceinverter,PQandPVcontrolledaswellasreferenceDGS,theimpactofvoltagedegradationonpowerloadcontrolinisolatedsystemsisanalyzed.Finallyanewmethodforgenerationcontrolinasmallpowersyste
5、mbasedonpowersharingbetweenmultipleDGSwithvoltagedegradationconsiderationasthelastalternativeforsustainingthesystemisproposedandimplemented.cAcknowledgements·Prof.G?ranAnderssonandDr.JostAllmelingfromETH-Zürich.ThankyouforintroducingmetotheworldofMicrogr
6、ids,proposingtheideaofthisproject,andgivingtheopportunitytojointhepowersystemslaboratoryofETH.·Dr.MehrdadGhandhariformKTH-Sweden.Thankyouverymuchforallyourtime,concern,support,andkindattention.Yourhelpfulcommentsonthisworkwereofgreatvaluetome.·Dr.ValeryK
7、nyazkinformKTH-Sweden.Specialthanksforyourtimeandinterestinevaluatingthequalityofthisthesis.·Mr.PaoloPigaifromUniversityofWisconsin-Madison,USA.Humblethanksforspendingsomeofyourvaluabletimeatpreparingcomprehensiveanswerstomyquestions.Iowemysinceregratitu
8、detoyouforsharingsomeofyourpreciousexperiencesinthefieldofMicrogrids.·Dr.SimonRoundfromPowerElectronicSystemsLaboratoryofETH,andMr.TurhanDemirayfromPowerSystemsLaboratoryofETH.Specialthanksforyourvaluablehints.·Dr.TimmH.Te
