第39卷第6期2023年6月电网与清洁能源PowerSystemandCleanEnergyVol.39No.6Jun.2023清洁能源CleanEnergy——————————基金项目：云南电网公司科技项目计划资助（YNKJXM20220177）；国家自然科学基金面上项目（51877018）。ProjectSupportedbyTechnologicalResearchProgramofYunnanPowerGridCompanyLtd.（YNKJXM20220177）；NationalNaturalScienceFoundationofChina（51877018）.ABSTRACT：Thewidespreadapplicationofdistributedgeneration（DG）hasbeenconstantlypromotingtheconstructionofactivedistributionnetworks.However，theclosingloopoperationoftheactivedistributionnetworkfaultrecoverygeneratestheimpulsecurrent，whichseriouslythreatensthesafetyofpowerelectronicdevicesandhumanbeings.DuetothechangeofDGoutputcharacteristicscausedbytheinstantaneousvoltagefluctuationintheclosedloop，theclosingcurrentintheactivedistributionnetworkbecomesmorecomplex，anditisdifficulttoanalyzeandcalculateitaccuratelyatpresent.Forthisreason，theequivalentmodeloftheclosingloopintheactivedistributionnetworkwithDGisestablished，andtheinfluenceofDGontheclosingloopcurrentintheactivedistributionnetworkisanalyzed.Bydecomposingtheactiveradialopen-loopnetworkandthepassiveloopnetwork，theexpressionsoftheclosingloopsteady-statecurrentandtheclosinglooptransientcurrentarederived，andthecalculationmethodoftheclosingloopcurrentintheactivedistributionnetworkconsideringtheinfluenceofDGoutputcharacteristicsisproposed.TheexamplesshowthattheDGoutputcharacteristicshaveadirectimpactontheclosingcurrent，andtheproposedcalculationmethodcanaccuratelycalculatetheclosingcurrentintheactivedistributionnetwork.KEYWORDS：activedistributionnetwork；closingcurrent；distributedgeneration；failurerecovery；equivalentmodeling摘要：分布式电源（distributedgeneration，DG）的大量应用使得主动配电网建设持续推进。主动配电网故障恢复的合环操作产生冲击电流，严重威胁电力电子设备和人身安全。由于合环瞬间电压波动造成DG输出特性变化，使得主动配电网的合环电流变得更加复杂，目前尚难以准确分析和计算。为此，建立了含DG的主动配电网合环等值模型，分析了DG对主动配电网合环电流...
