某110 kV变电站母差保护动作事故原因分析

Cause Analysis of Bus Differential Protection Action Accident in a 110 kV Substation

针对一起雷击事故造成的某110 kV变电站35 kV母差保护动作事件,通过对本变电站35 kV母线、二次回路及保护装置进行全面检查,对继电保护动作过程和事故录波报告进行对比分析,确定本次母线保护装置动作的根本原因,并提出了针对性的处理方案和整改措施,以便更好地确保电网安全稳定运行。

To a 35 kV bus differential protection event in a 110 kV substation caused by a lightning accident,a comprehensive inspection of the 35 kV bus,secondary circuit and protection devices of the substation is carried out.The process of relay protection action and accident recording report are compared and analyzed to determine the root cause of the bus protection device action.In order to better ensure the safe and stable operation of power grid,the corresponding treatment scheme and rectification measures are put forward.