第39卷第6期2023年6月电网与清洁能源PowerSystemandCleanEnergyVol.39No.6Jun.2023智能电网SmartGrid——————————基金项目：国家电网有限公司科技项目（低压配电设备数字化提升与智能化应用技术研究）（5700-202099525A-0-0-00）。ProjectSupportedbyScienceandTechnologyProgramofSGCC（ResearchonDigitalizationUpgradingandIntelligentApplicationTechnologyofLow-VoltageDistributionEquipment）（5700-202099525A-0-0-00）.ABSTRACT：Thispaperproposesamethodforcontrollingthree-phaseunbalanceinthedistributionnetworkbycombiningintelligentterminalswithcommutationswitch.Anoptimizedmodelforlayoutofthecommutationswitchinthedistributionnetworkisconstructed，andanoptimizationmethodbasedondifferentialevolutionalgorithmisproposedtocalculatetheoptimallayoutofswitches.Basedonthemodel，historicaloperationdataofthetransformerareaandultra-short-termpowerpredictiondata，adynamicoptimizationmethodforthree-phaseunbalanceinthedistributionnetworkconsideringloadfluctuationsisproposed.Finally，theoptimizationmethodforlayoutofthecommutationswitchisverifiedbysimulationusinghistoricaloperationdataofatestingtransformerarea，andtheresultsshowthattheoptimallayoutcalculatedbasedonthemodelcanmeettherequirementofcontrollingthree-phaseunbalanceinthedistributionnetwork.Inaddition，consideringthenumberofswitchesparticipatinginphase-changing，phase-changingcycleandtheservicelifeofthecommutationswitch，fivescenariosofdynamicoptimizationexperimentsforthree-phaseunbalanceareconductedinthetestdistributionnetwork，andtheresultsshowthatthedynamicoptimizationstrategyforthecommutationswitchundertheoptimallayoutcanreducethenumberofphase-changingactionsandlowertheaveragethree-phaseunbalancedegreeofthedistributionnetworkbelowthetargetlevel，andcanalsoreducethenumberofthecommutationswitchparticipatinginphase-changingclosetotheupperlimitoftheirservicelife.Theapplicabilityofthemethodfordynamicoptimizationofthree-phaseunbalanceinthedistributionnetworkusingintelligentterminalsandcommutationswitchisverified.KEYWORDS：intelligenttermina...
