一起电压重动插件烧毁事故的原因分析及预防措施 

梁兆侃1，高研斌1，高研1，杨顺2，平路2 
(1 中国水利水电第十一工程局有限公司，河南 郑州 450000；
2 国网三门峡供电公司，河南 三门峡 472000) 
 

摘 要：针对一起电压重动插件烧毁事故，分析了事故的原因，对电压切换箱及电压重动并列装置进行检查，并分析了PT 二次反送电原因，阐述了电压切换回路、电压重动并列回路的原理，指出事故发生的根本原因是PT 二次反送电，结合工作实际，有针对性地提出了预防此类事故发生的各种防范措施。
关键词：电压切换；电压重动；反送电；防范措施
中图分类号：TM645 文献标识码：B 文章编号：1007-3175(2016)01-0041-03

Reason Analysis and Precautions of a Burning Accident of Voltage Reacting Plug-In 

LIANG Zhao-kan1,
GAO Yan-bin1, GAO Yan1, YANG Shun2, PING Lu2 
（1 Sinohydro Bureau 11 Co. , Ltd, Zhengzhou 450000, China;
2 State Grid Sanmenxia Power Supply Company, Sanmenxia 472000, China） 
 

Abstract: In allusion to a burning accident of voltage reacting plug-in. this paper analyzed the accidental causes. The voltage switching box was inspected, as well as the device of voltage reacting and paralleling. This paper analyzed the causes of potential transformer’s secondary winding anti-inverse charging and expounded the principles of voltage switching circuit, voltage reacting and paralleling circuit, pointing out that the ultimate cause of the accident was the potential transformer’s secondary winding anti-inverse charging. Combined with the actual work, this paper presented various kinds of precautions to prevent the similar accidents.
Key words: voltage switching; voltage reacting; anti-inverse charging; precautions

参考文献
[1] 孙亚辉，陈志强，蔡衍. 电压互感器二次回路反充电的原因分析及防范措施[ J ] . 电力系统保护与控制，2010，38(9)：126-129.
[2] 李敏霞，袁文嘉，郭化冰. 电压切换插件烧毁问题的分析及解决方案[ J ] . 电力系统保护与控制，2009，37(23)：149-151.