华电技术 ›› 2012, Vol. 34 ›› Issue (6): 54-55.

• 技术交流 • 上一篇    下一篇

一起电压互感器二次回路缺陷引起保护装置误动事故的分析

魏刚,王小琪   

  1. 长治供电分公司,山西长治046011
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-06-25

Analysis on incorrect tripping accident of protection device caused by defect in secondary circuit of voltage transformer

WEI Gang, WANG Xiaoqi   

  1. Changzhi Power Supply Company, Changzhi 046011, China
  • Received:1900-01-01 Revised:1900-01-01 Published:2012-06-25

摘要: 电压互感器的二次回路接线是关系到电网安全的重要因素,如果其中存在缺陷,在一定条件下很容易导致保护装置的误动。介绍了一起由于电压互感器二次回路缺陷而引起的保护误动事故,分析了误动的原因并提出了相应的解决措施。

关键词: 电压互感器二次回路, 保护装置, 误动, 分析

Abstract: The connection of the secondary circuit of voltage transformer is crucial to safety of the power grid, and under certain conditions, the defect existing in the secondary circuit of voltage transformer may easily lead to incorrect tripping of protection device. An incorrect tripping accident of protection device caused by defect in the secondary circuit of the voltage transformer was introduced. The reasons of the accident were analyzed, and relevant solution was proposed.

Key words: secondary circuit of voltage transformer, protection device, incorrect tripping, analysis