考虑配电网运行风险的分布式电源优化配置

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1、硕士学位论文AbstractThereasonable,safeandreliableuseofrenewableenergyisthekeystepinthenationalstrategyofsustainabledevelopment.Renewableenergysourcessuchaswind,solarandothernaturalclimateconditions,hasastrongrandomandintermittentcharacteristic.Suchcharacteristicbri

2、ngsaboutmuchinfluenceofdifferentlevelonoperationandplanningofdistributionnetwork.Thedegreeofinfluenceiscloselyrelatedtothelocationandcapacityofdistributedgeneration.Thispapermakesaevaluationofdistributionnetworkoperationrisk,whichcombineswiththecharacteristic

3、sofdistributedgeneration.Thedistributionnetworkoperationriskassessmentisbasedontherisktheory.Theanalysisisdevelopedfromtwopoints,whicharetheimpactonoftheoperationriskandcostwhendistributiongenerationaccessingtothedistributionnetwork.Theeasyalsousestheimproved

4、particleswarmoptimizationalgorithmtoimprovethedistributedgenerationmulti-objectiveoptimalallocationmodel,toobtaintheoptimalallocationscheme.Thespecificcontentsareasfollows:Firstly,accordingtotheeffectofdistributiongenerationondistributionnetworkoperationrisk,

5、aevaluationmodelisestablished.Themodelusesutilityfunctiontomeasuretheconsequencesoffailure,syntheticallyconsiderstheimpactsofdistributedpowerlineoutageprobabilityandagingofcomponentsfailurerateandweatherfactorsontheprobabilityoffailure.Theestablishmentofriski

6、ndexisfromthreeaspects,whicharethenodevoltageandlineoverloadandlossofsystemload.Acombinationweightingmethodisusedinthedistributionnetworkoperationriskassessmentprocess,whichisthecombinationofAHPandthenodeimportantdegree.TheIEEE-33bussystemsimulationresultssho

7、wthattheevaluationmethodhasgoodadaptabilitytothefluctuationofload,whichcanbeusedintheevalutionofdistributionnetworkoperationriskunderdifferentloaddemand.Secondly,therisktheoryisintroducedtotheoptimalallocationofdistributedgeneration.Andamulti-objectiveoptimiz

8、ationmodelfordistributionnetworkbasedontheriskassessmentisestablished.Themodelconsiderstheinfluenceofsystemriskandeconomywhendistributiongenerationaccessingtodistributionnetwork.Themodelc