一起主变压器直流偏磁装置故障原因分析

Cause analysis of main transformer DC demagnetization device

针对一起电力系统主变压器直流偏磁抑制装置故障,运用对比和计算的方法判断其损坏原因是非对称接地故障时的交流分量引起的发热熔断,并提出相应对策,避免类似问题再次发生,保障电网系统稳定运行。

The purpose of this paper is the application of DC bias suppression device is presented,and an abnormal operating event of DC bias suppression device in the main transformer of the power system. Analyzing the reasons and putting forward countermeasures with the method of comparing and calculating,which can avoid the recurrence of similar problems so as to ensure the stable operation of the power grid system.