电除尘变压器差动保护动作原因分析及改进措施

华电技术 ›› 2014, Vol. 36 ›› Issue (3): 41-42.

电除尘变压器差动保护动作原因分析及改进措施

(安徽华电芜湖发电有限公司，安徽芜湖〓241080)

出版日期:2014-03-25

Analysis on reason of incorrect trip of differential protection of electrostatic precipitator transformer and improvement measures

(Anhui Huadian Wuhu Power Generation Company Limited, Wuhu 241080, China)

Published:2014-03-25

摘要/Abstract

摘要： 摘要：介绍了某发电厂一起电除尘整流柜控制回路接线错误导致变压器差动保护不正确动作的情况，分析了变压器差动保护不正确动作以及电场发生偏励磁的原因，提出了改进方案及预防措施。

关键词: 关键词：差动保护, 偏励磁, 直流分量, 过零检测

Abstract: Abstract:In a power plant, the differential protection of the electrostatic precipitator transformer tripped incorrectly, which is caused by wiring error of the control loop of the precipitator rectifier cabinet. The fault situation was introduced. The reason of incorrect trip of the differential protection and the reason of the bias excitation of the electric field were analyzed, and the improvement scheme and prevention measures were proposed.

Key words: Keywords:differential protection, bias excitation, DC component, zerocross detection

杨玉柱. 电除尘变压器差动保护动作原因分析及改进措施[J]. 华电技术, 2014, 36(3): 41-42.

YANG Yuzhu. Analysis on reason of incorrect trip of differential protection of electrostatic precipitator transformer and improvement measures[J]. Huadian Technology, 2014, 36(3): 41-42.