摘要
目的:上海轨道交通1号线(以下简称“1号线”)自开通运营以来已经20多年,信号设备老化严重,需通过设备大修改造提升系统稳定性,然而地铁运营夜间施工时间紧张,信号系统调试倒换风险较大,更不能影响次日正常运营,故需寻找一种适合的信号系统倒接方案。方法:通过仔细分析施工调试工作步骤,结合1号线此次大修后仍采用原系统制式,白天运营和夜间测试共用的设备多,导致倒接开关需要数量多。传统使用倒接开关的方式操作时间长,操作步骤多,不确定性因素多,倒接风险较大,同时还要求每次施工后需全部倒回原系统运行。因此,在各种限制条件下新旧系统间的倒接方案成了确保安全的至关重要环节。经过分析论证,方案比选,现场试验测试后最终决定采用继电器替代传统倒接开关。结果及结论:利用继电器节点组成电路实现不同系统间的倒换,可以多节省25 min的夜间施工时间,并且在整个调试施工中未发生倒接错误。该方案更加适合1号线这类夜间调试施工时间短、倒接设备多、安全要求高的信号大修项目。
Objective:Shanghai Rail Transit Line 1(hereinafter referred to as′Line 1′)has been in operation for more than 20 years,and the signaling equipment is aging severely.The system stability needs to be improved through equipment overhaul and renovation.However,the night construction time is tight,and the risk of signaling system debugging and switchover is relatively high,which should not affect the normal operation of the next day as well.It is necessary to find a suitable signaling system switchover scheme.Method:By carefully analyzing the construction and debugging steps,taking into consideration that the original system is still used after the overhaul of Line 1,a lot of equipment are shared for daytime operation and nighttime testing,requiring a large number of switchover switches.The conventional switchover switch needs a long operation time,multiple operation steps,having many uncertain factors and high risks during switchover connection.At the same time,it also requires a fully switchover operation to the original system after each construction.Under various limited conditions,the switchover scheme between the new and old systems has become a crucial link to ensure safety.After analysis,and argumentation,scheme comparison and on-site testing,it is was ultimately decided to replace the conventional switches with relays.Result&Conclusion:Using relay nodes to form circuits for switching between different systems can save an additional 25 minutes of night construction time,and no switchover errors occur throughout the entire debugging construction.This scheme is more suitable for signaling system overhaul projects such as Line 1,which has short nighttime debugging construction time,a lot of switchover equipment,and high safety requirements.
作者
戴翌清
张凯
DAI Liqing;ZHANG Kai(Shanghai Metro Maintenance Support Co.,Ltd.,200070 Shanghai,China)
出处
《城市轨道交通研究》
北大核心
2023年第7期211-214,219,共5页
Urban Mass Transit
关键词
上海轨道交通1号线
信号设备
大修
倒接
施工风险
Shanghai Rail Transit Line 1
signaling equipment
overhaul
switchover
construction risk
