光纤通信复用继电保护通道告警信号实例分析

Analysis of fault alarm signal on the optic-fiber communication channel multiplexed with relay protection

为了能给光纤通信复用继电保护通道的运行维护工作提供一些借鉴和参考,文章以嘉王5417线第二套保护通道为例,进行了较为详细的运维过程介绍。该通道曾频繁出现不明原因的通信告警,经反复试验和分析研究,最终找到了排除故障隐患的方法,提高了保护装置的投运率。论文指出,铸成上述问题的主要原因是对光纤通信设计指标的核算以及保护装置内21-206多模/单模转换器和光功率放大器的性能指标与OPGW传输之间的匹配,存在着问题。而在对前者的核算中,不但要注重核算接收灵敏度指标,还要注重核算接收过载指标。

In order to offer some useful references for the operation and maintenance work of optic-fiber communication channel multiplexed with relay protection, through the example of Jiawang 5417 line used as phase Ⅱ protection channels, the article introduces the running and maintenance process in detail. This channel frequently appeared some alarms that the reasons were uncertain. After repeatedly testing and analysis research finally found out the method of eliminated faults and hidden trouhtes and then improved running rate of protecting devices, The author believed that the main reason brought the above problems were in the optical fiber communications design index accounting as well as the performance index were not matched between 21-206 multi-mode fiber/singlemode fiber converter and light power amplifier in the protective device and OPGW transmission. To former accounting, not only need to pay great attention to the calculation of receiving sensitivity index, but also to the calculation of receiving overload index.