Page 38 - 2023年第54卷第5期
P. 38

Researchandapplicationofdynamicoperatingwaterlevelcontrolmethodduringflood
                             seasonforlargelow - waterheadhydraulicproject:Acasestudyof
                                         ChangzhouMulti - purposeHydroproject
                                                                                                1,2,3,4
                                1,2,3,4
                                                                                   1,2,3,4
                                                                    1,2,3,4
                     ZHAOBikui      ,QIUJing  1,2,3,4 ,HUANGBensheng    ,TANChao       ,LIUDa
                            (1.GuangdongResearchInstituteofWaterResourcesandHydropower,Guangzhou 510610,China;
                                2.GuangdongKeyLaboratoryofHydrodynamicResearch,Guangzhou 510610,China;
                               3.StateJointEngineeringLaboratoryofEstuaryHydraulics,Guangzhou 510610,China;
                   4.GuangdongProvincialScienceandTechnologyCollaborativeInnovationCenterforWaterSafety,Guangzhou 510610,China)
                  Abstract:Dynamiccontrolofwaterlevelofdamoperationduringthefloodseasonisanimportantmeanstopromote
                  theutilizationofrainandfloodresources ,alleviatethecontradictionbetweenreservoirfloodcontrolandbenefit,
                  andimprovethecomprehensivebenefitofahydropowerstation.TakingtheChangzhouMulti - purposeHydroproject
                  asanexample,amulti - objectivejointoptimizationdispatchmodelforfloodcontrolandpowergenerationsuitable
                  forsuchprojectswasconstructedinviewofthemulti - constraintproblemofinundationinupstreamareas ,tailwater
                  jackingindownstreamareasandlimitedunitoutputoccurringinthedispatchprocessoflargehydroprojectwithlow -
                  waterhead ,andafloodrootingmethodbasedonthesubmergencecriticalcontrollineandanoptimizedsolution
                  methodforsuccessivedistributionofpowergenerationflowwereproposed.Throughlongseriessimulationcalcula
                  tionsandcomparativeanalysisofmultipleschemes ,itisfoundthatcomparedwiththeconventionalscheme,theu
                  tilizationofthedynamiccontrolofoperatingwaterlevelcouldincreasetheaveragepowergenerationheadofthehy
                  droprojectby6.88% andtheaveragepowergenerationby8.75% infloodseason ,turningoutsignificanteconomic
                  benefits.Thisresearchmethodcouldserveasreferenceforfloodcontrolandpowergenerationjointoptimalopera
                  tionoflarge - scalehydroprojectswithlow - waterhead.
                  Keywords:low - waterhead;flooddispatch;dynamicwaterlevelcontrol;powergenerationdispatch;Changzhou
                  Multi - purposeHydroproject
                                                                                    (责任编辑:耿庆斋)


              (上接第 529页)
                      Researchonimprovedmulti - targetmulti - visionunloadingidentificationmodelof
                                 dam transportvehicleunderlargescenevideosurveillance

                                                    1
                                                                    1
                                     1
                                                                                                 2
                                                                                    1
                       ZENGTuocheng,WANGJiajun,WANGXiaoling,ZHANGYunuo,KANGDong
                      (1.StateKeyLaboratoryofHydraulicEngineeringSimulationandSafety,TianjinUniversity,Tianjin 300350,China;
                                   2.YalongRiverHydropowerDevelopmentCo.,LTD,Chengdu 610051,China)
                  Abstract:Unloadingidentificationoftransportvehicleisofgreatsignificanceforensuringdamconstructionsafety
                  andoptimizingtransportconfiguration.However,indam construction,theGlobalNavigationSatelliteSystem
                  (GNSS)isoftenusedtoanalyzetheactivitystateoftransportvehicles,whichhasthedisadvantagesofhighmoni
                  toringcostandlowidentificationaccuracy.Atpresent ,itisatrendtodeployhigh - definitioncamerastomonitor
                  theconstructionoflargescenesonthedamsurface,butthereisnoresearchontheidentificationofunloadingof
                  transportvehiclesbasedoncomputervision.Tosolvetheaboveproblems,aByteTrack - HRNet - DCLunloading
                  identificationmodelofdamconstructiontransportvehicleunderlargescenevideomonitoringisproposed.Firstly,
                  ByteTrackisusedtorealizethevisualdetectionandtrackingofmultipletransportvehiclesinthemonitoringvide
                  o ,andrecordthedrivingtrack.Secondly,HighResolutionNet(HRNet)isusedtodetectkeypointssuchas
                  theheadandtailofeachtransportvehicle ,andthenjudgetheforward,stoporbackwardtravelstatusofthe
                  transportvehiclebasedonthetrackrecorded.Furthermore ,theliftingstateofeachhopperisjudgedbyDestruc
                  tionandConstructionLearning(DCL)fine - grainedclassificationmethod.Finally,theunloadingstateofthe
                  transportvehiclesisdeterminedbasedontheanalysisresultsofthesethreevisualmethods.Theexperimentalveri
                  ficationwascarriedoutontheconstructionsiteofLianghekouinSouthwestChina.TheproposedByteTrack - HR
                  Net - DCLunloadingidentificationmodelhasanaverageaccuracyof87.3% forunloadingjudgmentand90.3% for
                  unloadingtimeundertheaverageframerateof34 ,whichverifiesthefeasibilityandeffectivenessofthismodel.
                  Keywords:unloadingidentification;large - scenevideosurveillance;multipleobjectstracking;keypointde
                  tection ;fine - grainedclassification
                                                                                    (责任编辑:李福田)

                —  5 4  —
                     0
   33   34   35   36   37   38   39   40   41   42   43