励磁系统灭磁电阻损坏的原因分析

Analysis on reason of damage of deexcitation resistor in excitation system

自华电福建沙县城关水电有限公司#1机组投运以来,第1次出现了灭磁电阻损坏的问题,针对出现的问题对故障原因进行了分析,利用排除法初步判断为灭磁电阻故障,更换灭磁电阻后,机组运行正常。

Since the unit No.1 of Huadian Fujian Shaxian Chengguan Hydropower Company Limited was put into operation,the deexcitation resistor was damaged first time.Aiming at the happened problem,the reason of the fault was analyzed.Using the exclusive method,it was diagnosed that the fault is deexcitation resistor failure preliminarily.After the deexcitation resistor was replaced by new one,the unit operates normally.