数字化变电站电容器保护误动原因分析及处理措施

Cause Analysis and Treatment Measure on Electrolytic Capacitor False Action of Protection in Digital Substation

针对保护动作直流分量偏大的现象,通过实验室模拟故障分析,认为保护装置采样值处理采用硬件积分是导致直流分量偏大的原因,提出改用软件积分的措施,并分析处理效果。

Aiming at phenomenon of large DC component of protection action,this paper considers that the cause of the failure is the use of hardware integral through simulation failure analysis in laboratory,and at last,puts forwards the settlement that is to use software integral,and analyzes the settlement result.