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基于电蓄热与抽水蓄能的风电消纳协调控制策略（英文）.docx

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基于电蓄热与抽水蓄能的风电消纳协调控制策略（英文） Withtheincreasingdevelopmentofwindpower,effectiveintegrationofwindenergyintothepowergridhasbecomeanimportantissue.Oneofthekeychallengesintheintegrationofwindpoweristomanagetheintermittencyanduncertaintyofwindenergy.Toaddressthisproblem,variousenergystoragetechnologieshavebeenproposed,suchasbatteries,pumped-storagehydroelectricity,andcompressedairenergystorage.Amongthem,thermalenergystorageandpumped-storagehydroelectricityaretwopromisingoptions. Inthispaper,weproposeacoordinatedcontrolstrategyforwindpowerintegrationbasedonthermalenergystorageandpumped-storagehydroelectricity.Theproposedstrategyaimstooptimizetheutilizationofenergystorageandimprovethestabilityandsecurityofthepowersystem. Firstly,weintroducethebasicprinciplesofthermalenergystorageandpumped-storagehydroelectricity.Thermalenergystoragesystemsuseexcessenergyfromwindturbinestoheatstoragemedia,whichcanbereusedtogenerateelectricitywhenthereisahighdemand.Pumped-storagehydroelectricitysystemsstoreenergybypumpingwatertoahigheraltitudeandreleasingittogenerateelectricitywhenneeded. Next,wedescribethemaincomponentsoftheproposedcontrolstrategy,includingthewindturbine,thermalstoragesystem,andpumped-storagehydroelectricitysystem.Thecontrolstrategyisdesignedtooptimizetheallocationofwindpowertoeitherthermalenergystorageorpumped-storagehydroelectricity,dependingontheenergydemandandthestoragecapacity. Theproposedcontrolstrategyinvolvestwophases.Inthefirstphase,whenthewindpowergenerationexceedstheenergydemand,theexcessenergyisusedtochargethethermalenergystoragesystem.Inthesecondphase,whentheenergydemandexceedsthewindpowergeneration,theenergystoredinthethermalenergystoragesystemisreleasedtogenerateelectricity.Iftheenergydemandisstillnotfullymet,thepumped-storagehydroelectricitysystemisactivatedtosupplyadditionalelectricity. TheproposedcontrolstrategyisevaluatedthroughsimulationsusingamodifiedIEEE9-bussystem.Thesimulationresultsshowthattheproposedstrategycaneffectivelymanagetheintermittencyanduncert