上海轨道交通2号线信号系统的更新改造

Signal System Renewal and Transformation of Shanghai Urban Transit Line 2

上海轨道交通2号线信号系统已进入大修年限。从技术性、经济性、可实施性出发,对信号系统的3种更新改造方案进行比选。结合2号线运营及维护的具体需求,选择采用“TBTC(基于轨道电路的列车控制)+CBTC(基于通信的列车控制)”双信号异型冗余系统改造方案,即以轨道电路作为降级模式的CBTC系统方案。详细介绍了该改造方案的总体架构、轨旁架构、车载架构,以及车辆基地和运营控制中心的实施方案。目前该“TBTC+CBTC”双系统兼容改造的列车已上线投用。

The signal system of Shanghai metro Line 2 has entered the overhaul period.Considering the technical,economic features and project feasibility,3 types of renovation solutions for current signal system are comparatively analyzed.Combined with the operation and maintenance requirements of Line 2,the"TBTC+CBTC"(train-based and communication-based train controls)dual-signal redundant system transformation scheme is recommended,in which,the the track circuit it taken as the degraded mode of CBTC system.On this basis,the overall structure,track side structure and vehicle structure,as well as the implementation scheme of train depot and operation control center are introduced.Currently,the"TBTC+CBTC"dual-signal redundant system reconstruction scheme has been applied to train operation.