摘要
介绍了某220kV变电站因2MPT二次回路烧毁而导致1MPT电压消失的经过,结合故障录波分析并验证了事故的起因,并就现场的情况分析了PT电压二次回路的缺陷,最后对二次回路提出了实用的改造方案并完成改造,对其他有类似问题的变电站提高PT二次回路可靠性有一定的借鉴作用。
This paper introduces a process of 1M PT voltage lost because of 2M PT secondary circle＇s burning, and analyzes the reason by combining the fault record. The PT secondary circle＇s defect is also analyzed. The improvement scheme and reformation are proposed and completed. It is a reference to improve the PT secondary circle＇s reliability of the stations which also have similar problems.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2009年第16期122-124,共3页
Power System Protection and Control
关键词
PT
二次回路
刀闸继电器
PT
secondary circle
disconnector relay
