摘要: 摘要：分析了电压切换回路中隔离开关辅助接点转换不可靠问题对系统的影响，指出了故障处理时存在的风险，结合实例提出相应故障处理方法及风险防范措施，保证了电力系统安全稳定运行。 关键词：电压切换；辅助接点；失压 ABSTRACT: This paper analyzes the influence of the unreliability of the auxiliary contact conversion of the disconnector in the voltage switching circuit on the system, and points out the risks existing in the fault treatment, the corresponding fault treatment methods and risk prevention measures are put forward based on practical examples, it ensures the safe and stable operation of power system.