Page 105 - 2024年第55卷第10期
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indicatorsforeach scenarioisquantitativelyestimated.Risk matrixlevelsaredefined consideringboth the
                  frequencyofoccurrenceandseverityoflossesofriskscenarios.BycombiningtheAsLowAsReasonablyPractica
                  ble (ALARP)criterion,theacceptablelevelofriskisclearlydefined,andnon - engineeringmeasuresareproposed
                  tocontrolrisks.ThisprovidesatheoreticalbasisforriskassessmentandpreventionoftheHWWDP.Thestudy
                  foundthat:(1)Onlyoptimizationschedulingamongthethreeschedulingmodescanmeetthewatersupplytargetof
                  15billioncubicmeterswitha95% assurancerate,andthewatersupplycapacityisincreasedby13% comparedto
                  therandomschedulingmode.(2)Thewatersupplyriskofsingle - sourceriskscenariosgraduallydevelopstowardsa
                  long - termwatershortageprocess.Multi - sourceriskscenariosfacemorecomplexschedulingsituations ,andthe
                  watersupplyriskisinadangerousstateinalldimensions.(3)TheproportionofriskeventsintheALARPregion
                  exceeds60%.Risksrelatedtoengineeringaremostlysmallprobabilityhighconsequencerisks ,whichshouldbe
                  prioritizedforresolutionintheALARPregionandpreventionintheunacceptableregion.(4)Emergencyplanssuch
                  asdownstreampersonnelevacuationareformulatedforlow - probabilitybuthigh - consequencewatersupplyriskstore
                  ducepotentialwatersupplylosses.Theresearchresultshaveapositivepromotingeffectontheriskmanagementofthe
                  HWWDP ,andstrengthentheapplicationvalueoftheALARPcriterioninriskassessmentofwatertransferprojects.
                  Keywords:watersupplyrisk;watertransferareaofHanjiang - to - WeiheWaterDiversionProject;riskscheduling
                  model;engineeringmanagementoperation;risklevelassessment

                                                                                    (责任编辑:耿庆斋)


              (上接第 1220页)
                         Short - term criticalpeak - shavingmodeofcascadehydropowerplantswith
                                   on - stream integralpumpedstoragehydropowerplant
                                                          1
                                                                          1
                                            1
                                                                                    2
                            1
                  GUOAijun,CHANGJianxia,WANGYimin,WANGXuebin,XIQiuyi,ZHENGYongheng                    2
                  (1.Xi’anUniversityofTechnology,StateKeyLaboratoryBaseofEco - hydraulicEngineeringinAridArea,Xi’an 710048,China;
                                  2.StateGridShaanxiElectricPowerCompanyLimited,Xi’an 710004,China)
                  Abstract:Relyingonexistingcascadedhydropowerstationstoconstructanon - stream integralpumpedstorage
                  hydropowerplant (OIPSHP)notonlyenhancesthecleanandflexiblepeak - shavingcapacityofnewpowersys
                  tem,butalsocomplicatestheoperationmodeoforiginalcascadedhydropowerstations.Hence,itisurgentto
                  carryoutresearchonthejointpeak - shavingmodeofcascadedhydropowerstationsandOIPSHPs.Inthisarticle ,
                  theoperationcharacteristicsofOIPSHPandcascadedhydropowerstationsareanalyzed,andashort - termpeak -
                  shavingoptimizationmodelforcascadedhydropowerstationswithOIPSHPisestablishedfirstly.Secondly ,the
                  criticalcharacteristicsofday - scalejointpeak - shavingmodearefound ,andgeneralcalculationformulasforthe
                  criticalpeak - shavingflowofcascadedhydropowerstationsandthecriticalextractionflowofOIPSHParederived
                  andthecriticalpeak - shavingmodeofOIPSHParecondensed.Finally,thetheoreticalresultsareappliedtoone
                  practicalcase ,AnKangOIPSHPdependingoncascadeAnKangandXunyangreservoirs.Itisfoundthatthecriti
                                                                    3
                  calpeak - shavingflowoftheAnKanghydropowerstationis892m ?sunderratedhead.Iftheoutflowislessthan
                       3
                                                                                                      3
                  892m ?s,theOIPSHPwillfullyextractandinjecttomaximizepeakshaving.Oncetheoutflowexceeds892m ?
                  s,theOIPSHPcanswitchtooperateinconjunctionwithaconventionalhydropowerstationinasynchronized
                  manner,aswellasoperatesomepumped - storageunitsasconventionalhydropowerstationunits.Long - termdis
                  patchresultsshowthatoperatinginsyncwithconventionalhydropowerstationsincreasestheoperationhoursof
                  OIPSHPbutlowersthejointdispatchingentity ’speak - shavingbenefit.Ontheotherhand,switchingsomeOIP
                  SHPunitstooperateasconventionalhydropowerstationunitsconsumesAnKanghydropowerstation ’sgeneration
                  waterusagebutimprovesthejointdispatchingentity ’speak - shavingbenefit.Therefore,flexibleselectionof
                  OIPSHPoperationmodesshouldbeimplementedinactualdispatchingprocessesbasedontheoperationofpower
                  gridsandtheoperationmainbodyofhydropowerstationsandOIPSHP.
                  Keywords:criticalpeak - shavingmode;on - streamintegralpumpedstoragehydropowerplant;cascadehydro
                  powerplants

                                                                                    (责任编辑:耿庆斋)

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