城市轨道交通信号电源系统可靠性分析

Reliability Analysis of Power Sub-system in Urban Transit Signaling System

城市轨道交通信号电源系统为信号系统提供可靠稳定的供电,其可靠性需纳入信号系统进行考虑,以实现系统整体的可靠性目标。对目前信号系统常见的电源系统结构进行了分析,并建立了相应的可靠性模型。比较了不同方案的可靠性及主要影响因素,为提升信号系统整体可靠性提供参考。

The power sub-system provides stable power sup- ply to signaling system in urban transit, the reliability of which needs to be taken into consideration with the signaling equip- ment, to achieve the reliability target of the whole system. In this paper,the common power supply structure in signaling system is analyzed,corresponding models with reliability are established. In the end, the reliability and influential factors of every signaling system configuration are compared in order to provide advice for the enhancement of signaling system relia- bility.