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ID:32010918
大小:4.77 MB
页数:97页
时间:2019-01-30
《微电网经济运行的优化算法-研究》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、塑婆盔芏亟±芏笪迨塞△坠!£垒璺!AbstractMicrogfidisanewpowernetworkwhichcontainsdistributedgenerations,energystoragedevices,loadsandcontrolunits.Microgridisoneofnumerousmeanstosolvetheproblemsoftraditionalpowersystem,whichbringshugeeconomicbenefits.Therefore,economicaloperat
2、ionofmicrogridisthekeytOattractusersandmakesitgeneralizedinthepowersystem.However,withtheincreasementofthenumberofdevicesinmicrogrid,theoptimizationofeconomicaloperationofmicrogridisbecomingmorecomplex.Existingoptimizationofschedulingalgorithmncannotmeetthenew
3、trendsofmicrogrid.Inthispaper,aimingatoptimizingtheeconomicoperationofmicrogrid,newoptimizationalgorithmsareproprosedtoimprovetheoperatingefficiencyofthealgorithmbasedonlagrangianrelaxation,whichreducesthecostofmicro-gridoperation.Themaincontentsareasfollows:1
4、)Theloadschedulingofdemand—sidemanagementisimprovedinmicrogrid.Existingalgorithmcannothandlelarge-scaleloadschedulingproblem.ThereforethroughimprovingboundedquadraticprogrammingandBendersalgorithmbasedontheframeworkoflagrangianrelaxation,anewdistributedalgorit
5、hmisproposedtosolvetheproblemofdemandsidemanagementinmicrogridwhichissuitableforlarge-scalecomputing.Throughsimulation,ouralgorithmsisbetterthantheexistingcentralalgorithmcomparedwithcomputationtime.21Theproblemofjointschedulingofloadsandthermalunitsissolvedin
6、microgrid.Inthissection,microgridisinisolatedmodewhichonlycontainsthermalunitsandloads.Thepurposeofthissectionisthatwhenthepowergridfails,themicrogridCancontinuetoruninalow·costmod.Thejointschedulingisdecoupledbylagrangianrelaxation.Thesubproblemofschedulingof
7、singlethermalunitissolvedbydynamicprogramming.Throughsimulation,theproposedmethodcaneffectivelyreducethecostoftheoperationofmicrogridandshiftpeakload..3)Consideringwindpowerinthegdd,economicaloperationofmicrogridIII逝江盘生亟±茎鱼迨塞△b§!!堑!underthegrid-connectedmodeis
8、studied.Weusechanceconstrainedprogrammingtodescribetherandomnessofwindpowerwhichsolvestheinfeasibleprobabilityofexpectedvaluemodel.Inaddition,distributedimplementationframeworkanda
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