一起智能站PT断线引起过电压保护动作的分析

Analysis of Over-voltage Protection Action Caused by PT Line Failure in Intelligent Substation

介绍了一起智能变电站PT中性线不常见断线故障现象、对检查的经过进行了分析和处理,阐述了跳闸的原因及探讨了防范电压二次回路中性线断线故障的重要性。

This paper introduces an uncommon PT neutral line failure in an intelligent substation,analyzes the cause of the failure and discusses the importance of preventing the voltage secondary circuit neutral line breakage fault.