摘要
双高频保护配置在220 kV线路保护中得到了广泛的应用。高频保护对220 kV电网的安全稳定运行有着至关重要的作用。高频通道是构成高频保护不可或缺的组成部分,高频通道运行情况的好坏直接影响高频保护的投运情况。该文通过一起非常少见的高频通道故障事例,分析了线路改造对高频通道的影响。并且提出了利用光纤通道替代高频通道的改造思路。
Dual redundant pilot protection configuration for 220 kV line has become a standard configuration in some power systems. PLC channel aided pilot protection is the most popular one. PLC channel is vital in such scheme. In or out of service state of the channel decides that of the relay. This paper analyses a rare case of PLC channel failure and presents an alteration from HF channel to optic fiber channel for pilot protection.
出处
《继电器》
CSCD
北大核心
2006年第6期75-77,84,共4页
Relay
关键词
继电保护
高频通道
分流衰耗
relay protection
HF channel
diffluence attenuation
