高频通道的组成及通道故障的常见处理分析

High-frequency Carrier Protection Channel's Construction and Analysis of Common Troubles

在220 kV及以上电压等级的电网中,广泛采用高频保护作为主保护。要构成能反应两端电气量的保护,必须具有能反应两端电气量的信号和传输这个信号的通道。高频保护运行的好坏,不仅取决于高频保护装置本身,同时在很大程度上取决于高频通道的工作情况。因此,高频保护通道的工作好坏是高频保护正确动作的重要前提。介绍高频保护通道的组成和常见故障及解决方法。

High-frequency carrier protection system is mainly used in 220kv or above electric network. In this system, there must have a channel to response, feedback and transport the signal. So, high-frequency cartier protection channel is essential to the high-frequency carrier protection system. We must make clear of high-frequency carrier protection channel＇s structure and common troubles and solutions to them.