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记叙某变电所保护装置操作箱电压切换回路烧毁和由于操作箱电压切换回路的拒动导致保护装置退出运行的经过,详细分析了操作箱电压切换回路的原理和事故发生的原因,指出了操作箱电压切换回路在保护回路与计量回路中存在的隐患和在运行过程中应注意的事项,提出了防止类似事故发生的措施并提出了相应的改进方法。
A brief account of a transformer substation protection device operating voltage switching circuit burned and the operation of the voltage switching circuit caused by the rejection of protective devices led to the withdrawal of the operation of a detailed analysis of the operating voltage switching circuit principle and the cause of the accident pointed out that the operation Box voltage switching circuit in the protection circuit and metering circuit hidden dangers and should pay attention to the matters in the operation process, put forward to prevent similar accidents and put forward corresponding improvements.