第26卷第5期2023年10月Vol.26No.5Oct.2023山东电力高等专科学校学报JournalofShandongElectricPowerCollege控制回路设计缺陷造成断路器拒动分析及改进方案研究俞伊丽,张展耀,接晓霞,戴涛,周晨(国网浙江省电力有限公司舟山供电公司,浙江舟山316000)摘要:分析了一起110kV断路器拒动导致其他保护越级动作的事故,根据事故原因,对保护操作箱跳合闸回路与断路器机构箱远方/就地切换把手的配合关系进行研究并改进。在改进方案中将保护跳合闸回路与测控跳合闸回路分开并单独引至断路器机构箱,同时新增远方/就地切换把手HK2和控制屏操作把手,以防止运维人员手合于故障时,保护装置动作但断路器拒动。关键词:控制回路;保护操作箱;断路器机构箱;断路器拒动中图分类号:TM772文献标志码:B文章编号:2096-9104(2023)05-0011-07AnalysisofOpeningRefusalofCircuitBreakerCausedbyControlCircuitDesignDefectsandStudyonImprovementSchemeYUYili,ZHANGZhanyao,JIEXiaoxia,DAITao,ZHOUChen(ZhoushanPowerSupplyCompanyofStateGridZhejiangElectricPowerCo.,Ltd.,Zhoushan316000,China)Abstract:Anincidentoftheoversteppingactionofotherrelayprotectiondevicescausedbytheopeningrefusalofa110kVcir⁃cuitbreakerisanalyzed.Basedonthecauseoftheincident,thecoordinationrelationshipbetweenthetrippingandclosingcircuitintheprotectionoperationboxandtheremote/localswitchinghandleinthecircuitbreakermechanismboxisstudiedandim⁃proved.Intheimprovementscheme,itisproposedtoseparatetheprotectivetrippingandclosingcircuitfromthemeasurementandcontroltrippingandclosingcircuit,andconnectthemseparatelytothecircuitbreakermechanismbox.Additionally,anopera⁃tionhandleonthecontrolpanelandaremote/localswitchinghandleHK2areadded,soastopreventtheoccurrenceoftheinci⁃dentthattherelayprotectionactsbutthecircuitbreakerrefusestoactwhentheoperationandmaintenancepersonnelmanuallyclosethecircuitbreakerandconnecttothefault.Keywords:controlcircuit;protectionoperationbox;circuitbreakermechanismbox;openingrefusalofcircuitbreaker0引言二次回路是指将继电保护装置、测控装置、安全自动装置、故障录波等二次设备按照一定功能连接在一起所构成的电气回路,以实现对一次设备运行工况的监视...