华电技术 ›› 2009, Vol. 31 ›› Issue (3): 65-66.

• 技术交流 • 上一篇    下一篇

由隔离开关控制回路对地短路引起的误动分析

陈小龙   

  1. 宁夏吴忠供电局,宁夏吴忠 751100
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-03-25

Analysis of disconnecting switch misoperation caused by earthing of its control circuit

CHEN Xiaolong   

  1. Ningxia Wuzhong Power Supply Bureau, Wuzhong 751100,China
  • Received:1900-01-01 Revised:1900-01-01 Published:2009-03-25

摘要: 现代化的变电站均采用电动隔离开关,电动隔离开关与“五防”系统配合使用既安全又方便,减轻了运行人员操作时劳动强度提高了工作效率,但若电动隔离开关操作回路设计不合理,会产生安全隐患。针对1条线路刀闸安装时出现因操作回路接地而使电动刀闸自动分合现象进行分析并提出了解决方案。

关键词: 隔离开关, 控制回路, 短路, 误动

Abstract: Now electric disconnector were applied in all modern substations, combining with FivePrevention Interlocking System to get safety and convenience as well as relieving labor intensity, but potential safety hazards would exist if the design for the control circuit of motordriven disconnecting switch was unreasonable. The disconnecting switch misoperation was happened due to earthing of its operation circuit when the disconnecting switch was installed in a line. This case was analyzed and the solving measures were put forward in this paper.

Key words: disconnector, control circuit, short circuit, misoperation