华电技术 ›› 2008, Vol. 30 ›› Issue (8): 49-52.

• 一线动态 • 上一篇    下一篇

微机距离保护中典型误动情况分析

王茂,马铁军   

  1. 内蒙古国华准格尔发电有限公司,内蒙古 准格尔 010300
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-08-25 发布日期:2008-08-25

Analysis of typical malfunction in microcomputer distance protection

WANG Mao, MA Tie-jun   

  1. Inner Mongolia Guohua Zhungeer Generation Corporation Limited, Zhungeer 010300, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-08-25 Published:2008-08-25

摘要: 由于距离保护的性能受电力系统运行方式的影响小,因而运行灵活、动作可靠、性能稳定,因而被普遍应用在各种电压等级的线路上。该保护方式虽然存在上述优点,但要想做好距离保护还有许多需要注意的方面,其中较为常见的问题就是距离保护中涉及到的几种误动情况。对几种情况进行了分析,给出了防止误动的具体措施。

关键词: 微机保护, 距离保护, 阻抗特性, 超越, 后加速, 涌流

Abstract: The distance protection has advantageous of flexible operation mode, reliable action and stable performance due to the performance of distance protection is influenced by electric system operation mode slightly, so distance protection is applied in lines of various voltage classes. But there are some problems needing attention in distance protection, and several malfunction faults are the problems occurred frequently. The several malfunction faults were analyzed, and the concrete measures to prevent malfunction were given in this paper.

Key words: microcomputer protection, distance protection, impedance characteristic, overreach, late-reshutting acceleration, inrush current