地铁信号电源系统冗余配置方案研究

On Redundancy Configuration for Metro Signaling Power Supply System

介绍了地铁信号电源系统单套设备配置方案。从提高系统整体可靠性角度出发,对信号电源冗余配置的必要性进行分析,并提出了2种冗余配置方案。阐述了不间断电源并机冗余配置方案的工作原理;论述了双切换、双不间断电源、双母线供电冗余配置方案的负载接入方式及不同故障场景下的工作状态。从可靠性和经济性对2种冗余配置方案进行对比。对比结果显示,双切换、双不间断电源、双母线供电冗余配置方案最优。

The single device configuration scheme for metro signaling power supply system（SPSS）is introduced.From the perspective of improving the overall reliability of the SPSS,the necessity of adopting redundancy configuration for the SPSS is analyzed,two engineering schemes to enhance the redundancy are proposed. Then,through describing the working principle of the redundancy configuration of uninterruptible power supply,the working conditions of dual switch,dual UPS,and dual Bus redundancy engineering scheme in different failure scenarios are elaborated,and two engineering schemes are compared from aspects of reliability and economy.The result shows that the dual switch,dual UPS,and dual Bus redundancy engineering scheme is the better.