摘要
通过描述一起直流接地引起的机组跳闸事故的处理过程,分析了动作值较低的接口光耦元件或快速中间继电器在直流系统正极一点接地情况下容易发生误动作的原因,提出了具体的改进方案。
A generation unit trip due to dc system ground fault and its treating process are described in this paper. Analysis indicates that the optic coupling element with low actuation value or the fast intermediate relay is easy to false operate when the positive pole of dc system has one-point ground fault. The improvement measures are proposed.
出处
《河北电力技术》
2003年第6期32-33,54,共3页
Hebei Electric Power
