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                    Researchonshort - term multi - levelandmulti - objectiveoptimalschedulingofcascade
                         hydropowerstationsundercomplexwaterresourcesandpowerconstraints

                                           1,2
                                                                                     3
                                                                         1
                                                          1
                                   WENXin ,LIUFanqian,TANQiaofeng,WANGHao
                                             (1.HohaiUniversity,Nanjing 210098,China;
                        2.HohaiUniversity,CooperativeInnovationCenterforWaterSafety&Hydro - Science,Nanjing 210098,China;
                                3.ChinaInstituteofWaterResourcesandHydropowerResearch,Beijing 100038,China)
                  Abstract:Thehigh - intensitypeakingandfrequencyregulationtasksofpowergridsandthestrictwaterdispatchre
                  quirementsofriverbasinslimittheoptimizationspaceoftheschedulingoperationofcascadehydropowerplants,re
                  sultingindifficultiesincoordinatingwaterandpowerregulation ,insufficientefficiencyandlong - timeinefficientop
                  erationofunits.Inthispaper ,theobjectivesofpowergenerationefficiency,peakingcapacityandoperatingcondi
                  tionsoftheunitwereconsidered ,andtheschedulingmodelsofpowergrids,cascadesandpowerstationswerees
                  tablishedatdifferentlevels ,andthemulti - levelmulti - objectivecooperativeoptimizationmechanism wasstudied
                  andmodelsolutionmethodswereproposed.Bynestingdifferentlevelswitheachotherandrollingforward,thesafe
                  andefficientoperationofthecascadehydropowerplantsisensuredundercomplexwaterandpowerconstraints.
                  TakingtheupperreachesoftheYellowRiverhydropowerbaseasanexample,themethodcanincreasethepower
                  generationcapacityofthecascadehydropowerplantsby2.75%,reducethewaterconsumptionrateby2.38%,and
                  reducetheinefficientoperationtimeoftheunitsby50.64% underthepremiseofguaranteeingthewaterdispatchre
                  quirementsoftheYellowRiverbasinandthefullconsumptionofahighproportionofsceneryinnorthwestChina.It
                  hasscientificsignificanceandpracticalvalueforscientificschedulingandsafeoperationofcascadehydropower.
                  Keywords:short - term scheduling; multi - scalenesting; economicoperation; loaddistribution; hydropower
                  baseintheupperreachesoftheYellowRiver

                                                                                    (责任编辑:于福亮)


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