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1、華北電力大學碩士學位論文AbstractAsanimportantpartofsrmrtgrid，Micro-gridisasmallgridcomposedofmicrosources，loadandcontrolsystem,whichisconnectedwithrmingridthroughpointofcommoncoupling，withtwo-wayflowcharacteristics．Microsourcesincludegeneratingunitsusingwindenergy,solarenergyandfossilfuel，andan
2、energystorageelement,whichclosetotheload，accessflexibility,andcansolvetheproblemofpoorpermeabilityofdistributedpowersupplyeffectively．Basedontheanalysisofmicrosources，costmodelsaregot,andmathematicalmodelofeconomicschedulinginmicmgridisbuilt，inwhichruingfuelcostsofmicrosources，maint
3、emnceandoperationcosts，environmentalgovernancecosts，andelectricchargewithpowergridasmultipleobjectivefunction．Inaccordancewithresultofeconomicoperationofmicrosourcesandinteractivepowerwithmaingridbyoptimizationalgorithm，integratedbenefitevaluationisproceeded．Integratedbenefitevaluat
4、ionofmicmgridisreflectedinthedifferencebetweentheprofitwhethermicrogridiSusedornot．Comprehensivebenefitevaluationmodelisbuiltconsistingofuserpowercosts，constructioninvestmentofpowersupplyandpowergridandenvironmentoverheadexpenses．Inaddition,analytichierarchyprocessisusedtodeterminet
5、heindexweightofthecostandbenefitanalysismodelwhichmakestheresultmorepracticalIntheimplementationofeconomicschedulingofmicrogrid，dynamicalsystemstheoryanditsapplicationisfocusedon．BasedontheimproveddifferentialevolutionpE)algorithm，VCHprogrammingisusedtooptimizepowerdistributionofMic
6、ro—grideconomyoperation,andthealgorithmimplementationprocessandtreatmentofcross-borderissuesisforfurtherelaboration．InthestudyofMicro-gridsystemcase．structuralmodeliSbuilt,andbasicdataaredefined．Basic．dataincludescurvesofloadintypicalday,locallyavailableresources，andtechnicalperform
7、anceparametersofmicro．sources．Throughtheresearchofmicrogridsystenl’t11esimulationoutcomeshowsthatthepromotionofmicrogridcanreducepowercosts，cutdownordelayconstructioninvestmentofpowersupplyandpowergridandimproveenvironmentallyfi'iendlydegree，asif,producefavorablecombinedrevenues，whi
8、chhavereferentialme
