摘要
现行的继电保护信号传输方案给SDH等通信设备的运行维护、网管操作带来很大压力,针对继电保护信号高可靠性传输的要求,文章提出了光纤迂回通道和继电保护业务自动倒换的传输方案,论证了光纤迂回通道传输的可行性,并运用故障树法对几种自动倒换方案进行可靠性分析和比较,得到结果证实PCM自动倒换光纤迂回传输方案,能较大地提高继电保护业务的传输可靠性。
To meet the demand of high reliable transmission of transmission line protective relay signal, this paper presents the solution of the optical fiber circuitous channel and services automatically switching. The feasibility of optical fiber circuitous channel was demonstrated, the reliability of different services automatically switching are compared by using the method of Fault Tree Analysis, and the result shows that PCM services automatically switching solution can greatly improve the transmission reliability of transmission line protective relay signal.
出处
《电力系统通信》
2005年第7期57-61,共5页
Telecommunications for Electric Power System
关键词
SDH光纤传输
迂回通道
线路继电保护
可靠性
自动倒换
SDH optical fiber transmission
circuitous channels
transmission line protection relay
reliability
automatically switching
