地铁牵引供电直流设备框架保护系统改进  

Improvement of Direct Current Equipment Frame Protection System of Metro Traction Power Supply

作　　者：李昕 范庆平 LI Xin;FAN Qingping

机构地区：[1]北京市地铁运营有限公司供电分公司,北京100082 [2]中铁检验认证中心有限公司,北京100081

出　　处：《铁道技术监督》2023年第1期50-54,共5页Railway Quality Control

摘　　要：在地铁牵引供电系统实际运行中,直流设备框架保护经常发生误动作,导致直流设备跳闸,中断列车供电,对地铁运营造成极大影响。介绍既有牵引供电直流设备框架保护方案和工作原理,结合牵引供电系统实际运行和维护经验,提出直流设备框架保护改进措施。对北京地铁6号线某变电所直流设备框架保护系统实施改造。改造后,牵引供电系统未出现直流设备框架保护错误动作,保障了直流设备框架保护的选择性和可靠性,减少对列车运行的影响。In the actual operation of metro traction power supply system, direct current equipment frame protection often occurs misoperation, which leads to direct current equipment trip, and interrupts train power supply. This has a great impact on metro operation.The paper introduces the direct current equipment frame protection scheme and working principle of existing traction power supply system, and puts forward the improvement measures of direct current equipment frame protection based on the practical operation and maintenance experience of traction power supply system.In a substation of Beijing Metro Line 6, the direct current equipment framework protection of traction power supply system was modified. After modification, there is no wrong action of direct current equipment frame protection in the traction supply system, which ensures the selectivity and reliability of direct current equipment frame protection and reduces the impact on train operation.

关 键 词：地铁牵引供电 直流设备 框架保护 改进 

分 类 号：U231.8[交通运输工程—道路与铁道工程]