第47卷第4期电网技术Vol.47No.42023年4月PowerSystemTechnologyApr.2023文章编号：1000-3673（2023）04-1692-09中图分类号：TM721文献标志码：A学科代码：470·40基于半马尔科夫过程的混合式直流断路器多状态可靠性分析潘恒毅，许建中，华回春，贾秀芳，付丰豪（新能源电力系统国家重点实验室(华北电力大学)，北京市昌平区102206）Multi-stateReliabilityAnalysisofHybridDCCircuitBreakersBasedonSemi-MarkovProcessPANHengyi,XUJianzhong,HUAHuichun,JIAXiufang,FUFenghao(StateKeyLaboratoryofAlternateElectricalPowerSystemWithRenewableEnergySources(NorthChinaElectricPowerUniversity),ChangpingDistrict,Beijing102206,China)1ABSTRACT:AsakeydeviceintheflexibleDCtransmissionsystemtoachievearapidfaultremoval,thereliabilityofthehybridDCcircuitbreakerdirectlyaffectstheoperationlevelofthesystem.Firstly,themulti-statetransfermodelofthehybridDCcircuitbreakerisestablishedbyconsideringthemulti-leveldeteriorationstate,themaintenancestateandtheageingstateoftheequipment.Afterwards,thebasicfailurerateiscalculatedwiththereliabilityblockdiagrambasedonthetopologicalanalysis.Adiscretizedtime-varyingfailureratemodelisobtainedcombiningthehealthindextheorywiththeWeibulldistributiontoconsiderthestatedifferences,whiletheinspectionrateandthemaintenancerateareincorporatedtoobtainthemulti-statetransferratemodel.Thereliabilityanalysisthengoesonbasedonasemi-Markovprocess.Themulti-statereliabilityindexofthehybridDCcircuitbreakeriscalculatedinthecontextofacertainflexibledirectdemonstrationproject,andthesensitivityanalysisiscarriedoutontheinspectioncycleandtheredundancyofeachredundantsystem，thestudycanprovideastrategicreferenceforthemaintenancearrangementandredundancyconfigurationofhybridDCcircuitbreakers.KEYWORDS:hybridDCcircuitbreakers;semi-Markovprocess;multipleperformancestates;reliability;sensitivity摘要：混合式直流断路器是柔性直流输电系统中实现故障快速切除的关键设备，其可靠性直接影响柔性直流输电系统的运行水平。首先综合考虑设备多级劣化状态、维修状态和老化状态，建立混合式直流断路器多状态转移模型。之后在拓扑分析的基础上通过可靠性...
