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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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