城轨通信系统UPS切换异常故障分析与改进  

Analysis and Improvement of UPS Switching Fault in Communication System for Urban Rail Transit

作　　者：孟兵 Meng Bing(Suzhou Rail Transit Operation Co.,Ltd.,Suzhou 215000,China)

机构地区：[1]苏州轨道交通运营有限公司,江苏苏州215000

出　　处：《铁路通信信号工程技术》2025年第3期118-124,共7页Railway Signalling & Communication Engineering

摘　　要：交流不间断电源(UPS)是地铁通信电源系统的核心设备,能为通信、ISCS等设备提供质量良好的交流不间断电源。针对苏州轨道交通3号线多站UPS无法自动切回市电状态的故障,通过对UPS工作原理、电网情况、整流器保护机制等进行深入分析研究,结合故障模拟复现,分析出导致该故障的原因,提出改进整流器相关软件控制逻辑的方案并进行测试验证,为类似故障的预防和分析处理提供借鉴。As the core equipment of the communication power supply system for subways,UPS can provide high-quality uninterrupted AC power supply for communication,ISCS and other equipment.In view of the fault that automatic switching to mains supply cannot be achieved at multiple stations on Suzhou Rail Transit Line 3,this paper conducts in-depth analysis and research on UPS working principles,power grid conditions and rectifier protection mechanism as well as fault simulation and playback,to analyze the cause of this fault.It also proposes a plan to improve the control logic of the relevant rectifier software,and presents the testing and verification of this plan,which can provide reference for the prevention,analysis and handling of similar faults.

关 键 词：城市轨道交通 UPS 切换故障 整流器保护 

分 类 号：U231.7[交通运输工程—道路与铁道工程]