一起主变220kV侧断路器开关偷跳的事故分析及对策  

Accident Analysis and Countermeasures of the Switch Stealing in a Main 220 kV Side Circuit Breaker

作　　者：冯瑞军 Feng Rui-jun

机构地区：[1]合肥供电公司,安徽合肥230022

出　　处：《电力系统装备》2018年第1期144-144,173,共2页Electric Power System Equipment

摘　　要：文章详细介绍了某220kV变电站主变高压侧开关偷跳事故情况,分析得出的结论是由于开关三相不一致保护时间继电器的绝缘下降而造成开关三相不一致保护误动,并就保护误动所暴露出的问题提出了相应的防范、整改措施,为其他同类型开关的稳定运行提供一定的参考经验。this paper introduces a 220 kV substation main transformer high voltage side switch tripping accident, the conclusion is due to insulation switch three-phase inconsistent protection time relay drops switch three-phase inconsistent protection misoperation, and misoperation of protection of the problems puts forward corresponding preventive and corrective measures and provide some reference experience for the stable operation of switch with other types of.

关 键 词：主变 高压侧开关 三相不一致保护 时间继电器 保护误动 

分 类 号：TM77[电气工程—电力系统及自动化]