Page 74 - 2023年第54卷第4期
P. 74

Acomparativestudyontheshortterm operationmodesofwater - wind - solarenergy
                                  complementarydispatchinginYalongRiverEnergyBase

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                           WANGYimin,LIUShifan ,LITingting,ZHOUYong,WANGXuebin               1
                (1.StateKeyLaboratoryofEco - hydraulicsinNorthwestAridRegionofChina,Xi’anUniversityofTechnology,Xi’an 710048,China;
                                     2.SanmenxiaYellowRiverMingzhuGroup,Sanmenxia 472000,China;
                                 3.YalongRiverHydropowerDevelopmentCompany,Ltd,Chengdu 610051,China)
                  Abstract:Withthedoublegrowthofwindpowerandphotovoltaicinstalledcapacityandtheirproportioninthe
                  powergrid,thesafeandeconomicaloperationofthepowersystemrequiresmorepeakshavingresources.Itisan
                  effectivewaytooptimizetheoperationmodeofschedulingandtapthepotentialofpeakshavingofexistingre
                  sources.Takingthedemonstrationbaseofwater - wind - solarintegrationmulti - energycomplementaryinthelower
                  reachesoftheYalongRiverastheresearchobject ,theproblemsexistinginthecurrentdecentralizedoperation
                  modeoftheenergybasewereanalyzed ,andacentralizeddispatchoperationmodeforthewater - wind - solarmulti -
                  energyenergybasewasproposed.Onthisbasis ,amulti - energycomplementaryoptimaldispatchmodelwascon
                  structedconsideringthecross - regionalpowertransmissionoftheenergybaseandthepeakregulationofmultiple
                  powergrids ,andthedifferencesbetweenthetwooperatingmodeswerecomparedandanalyzed.Theresultsshow
                  thatthecentralizeddispatchingoperationmodeproposedinthispapercangivefullplaytothepeakshavingcapacity
                  ofcascadehydropowerstationsinthebasin ,whichcannotonlyincreasetheconsumptionofnewenergy,butalso
                  guaranteethepowergenerationofhydropowertoacertainextent.Inaddition ,thelumpedschedulingoperation
                  modeproposedinthispapercaneffectivelysolvethephenomenonofpowerabandonmentandpowershortageatthe
                  sametimeinthecurrentoperationmode, whichreflectstheadvantagesofresourcecomplementaritybetween
                  regionsunderthecentralizeddispatchingoperationmode.
                  Keywords:operationmode;multi - energycomplementarity;centralizeddispatching;newenergyconsumption

                                                                                    (责任编辑:于福亮)


              (上接第 438页)
                           Real - timeforecastingofreservoirwaterlevelsovermultipleleadtimes
                                consideringtime - varyinghydrologicalmodelparametersand
                                         itsapplicationintheShuibuyaReservoir

                               ZHANGXiaojing,LIUPan,ZHOULiting,XIEKang,LIUWeibo
                     (StateKeyLaboratoryofWaterResourcesandHydropowerEngineeringScience,WuhanUniversity,Wuhan 430072,China)


                  Abstract:Accurateandreliablereservoirwaterlevelforecastingsupportsreservoirdecisionsandensuresthe
                  safetyoffloodcontrolinwatersheds.Conventionalmethodsforreal - timeforecastingofreservoirwaterlevelsare
                  basedonthestationaryassumptionoftherainfall - runoffrelationship,theperformanceofwhichdecreasesinthe
                  changingenvironment.Tothisend ,areal - timereservoirwaterlevelforecastingmethodovermultipleleadtimes
                  isdeveloped ,whichintegratesahydrologicalmodelwithtime - varyingparametersanderrorcorrections:thetime
                  - varyingparameters ,andfunctionsareconstructedbetweenthetime - varyingparametersandnatural?socio - eco
                  nomicfactors ;thetime - varyingparameterfunctionsareembeddedintheintegratedhydrologicalandreservoir
                  routingmodel,andthemodeliscalibratedbyminimizingthesum ofthesquarederrorsbetweenforecastedand
                  observedstreamflowovermultipleleadtimes;andanerrorcorrectionmethodbasedonaback - fittingalgorithmis
                  usedtoupdatetheforecastingofthereservoirwaterlevelsovermultipleleadtimes.Theresultsofthecasestudy
                  intheShuibuyareservoirbasinshowthattheproposedmethodcomparedwiththeconventionalmethodhasaverage
                  absoluteerrorsdecreasingby0.050m and0.040m duringthecalibrationperiodandthevalidationperiod ,re
                  spectively ,whichcanprovidehighaccuratereservoirwaterlevelforecastingoverlongleadtimesforfloodcontrol.
                  Keywords:Xinanjiangmodel;time - varyingparameters;reservoirwaterlevels;real - timeforecasting;leadtime

                                                                                    (责任编辑:耿庆斋)

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