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Amethodforquantifyingtheshort - term flexibilityofhydropowerin
cleanenergybasesconsideringwaterflowdelay
KANGYongxi,ZHAOZhipeng,CHENGChuntian
(DalianUniversityofTechnology,Dalian 116024,China)
Abstract:Cleanenergybasesarecrucialprovidersfortheflexibilityofpowersystems.However,respondingto
flexibilitydemands,theimplementationofhierarchicalhydropowerplansisaffectedbycomplexhydraulicspatio
temporalconnectionssuchaswaterflowdelays,whichleadtosignificantdeviationsacrossdifferenttimeperiods,
greatlyincreasingtherisksassociatedwithscheduling.Accuratelyquantifyingtheflexibilityofhydropowerstations
whileensuringtheirsafeoperationposesapressingchallenge.Inthispaper,ashort - termflexibilityquantification
modelandsolutionmethodaredevelopedforhierarchicalhydropowerincleanenergybasesconsideringwaterflow
delays.Themodelincorporatesthecumulativeeffectsofdelay - induceddeviationsandreconstructsthestochastic
constraintsbasedondualtheoryforefficientsolving.Theproposedmodelsimultaneouslydeterminestheflexibility
andflexibilitysupportmodesofhierarchicalhydropowerundertheinfluenceofwaterflowdelays.Usingacleanen
ergybasewithsixreservoirsinSouthwestChinaasacasestudy ,thepaperconductsmulti - scenariosimulationsand
parametersensitivityanalysesforflexibilityquantificationandimplementation.Theresultsindicatethattheproposed
methodcanaccuratelyquantifytheflexibilityofhierarchicalhydropowerundertheinfluenceofwaterflowdelays ,en
suringthesafeexecutionoftheflexibilitysupplyprocess.Thismethodisapplicabletoactualschedulingwork.
Keywords:flexibilityquantify;waterflowdelays;flexibilitysupport;dualitytheory
(责任编辑:王 婧)
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