电厂侧线路高频保护载波通道运行问题分析与处理

Analysis and Practice on Operation Problems of High Frequency Protection Carrier Channel on Power Plant Side Line

目前高压输电线路的高频保护仍然是线路的重要保护之一,然而由于线路高频保护载波通道运行问题较多,处理起来比较棘手。因此如何分析载波通道上的故障问题以及及时采取有效措施处理,对电厂侧线路高频保护至关重要。介绍了输电线路高频保护载波通道的基本构成,运行问题的分析,及其载波通道出现故障情况的查找方法。结合实践举例分析了实际运行中继电保护载波通道上的问题,并提供了相关处理措施的实践经验。

At present,the high-frequency protection of high-voltage transmission lines is still one of the important lines protection.However,there are many problems in operation of carrier channel of line high frequency protection,so it is difficult to deal with.How to analyze the fault on carrier channel and take effective measures to deal with it in time is very important for high frequency protection of line on power plant side.This paper introduces the basic composition of carrier channel for high frequency protection of transmission lines,analysis of operation problems,and methods for finding fault conditions of carrier channel.The problems on carrier channel of relay protection in actual operation are analyzed with practical examples,and the practical experience of relevant treatment measures is provided.