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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