上海轨道交通信号系统演进方案研究
王历珘
Research on Shanghai Rail Transit Signaling System Evolution Scheme
WANG Lizhou
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作者信息:上海地铁维护保障有限公司通号分公司，200235，上海
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Affiliation:Telecom & Signal Branch, Shanghai Metro Maintenance Support Co., Ltd., 200235, Shanghai, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2024.11.001
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中图分类号/CLCN:U231.7
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栏目/Col:研究报告
摘要:
［目的］随着城市轨道交通高速发展，列车的运营量大幅增加，现有的CBTC(基于通信的列车自动控制)系统已无法满足高密度运营的信号系统需求，有必要对城市轨道交通信号系统演进方案进行研究。［方法］提出一种城市轨道交通信号系统演进方案，使得信号系统在出现单发故障时，由上-下后备降级运行模式向左-右互备冗余模式转变。首先，合并ZC(区域控制器)与CI(计算机连锁)系统，从而减少信号系统的架构层级；然后，改进ATS(列车自动监控系统)为以太网心跳信息交互的热备冗余结构；同时，设计DCS(数据通信系统)高冗余架构，实现信号核心业务间的物理隔离；最后，改变车载信号系统为头尾冗余结构，以完成主备方式的无缝切换。［结果及结论］此方案可显著提升信号系统的可靠性和可用性，实现故障时的无感运营，确保了高密度运营下的系统稳定性和连续性。
Abstracts:
［Objective］ With the rapid development of urban rail transit, the operational volume of trains has significantly increased. The existing CBTC (communication-based train control) system can no longer meet the signaling system needs of high-density operations, necessitating the research into urban rail transit signaling system evolution scheme. ［Method］ An evolution scheme for urban rail transit signaling system is proposed, with transitioning from an up-down backup degradation operation mode to a left-right mutual backup redundancy mode in the event of single-point failures in signaling system. First, the ZC (zone controller) and CI (computer interlocking) systems are merged to decrease signaling system framework levels. Then, the ATS (automatic train supervision) system is improved to a hot standby redundancy structure for Ethernet heartbeat information exchange. Additionally, a highly redundant DCS (data communication system) architecture is designed to achieve physical isolation between core signal operations. Finally, the on-board signaling system is modified to a head-tail redundancy structure, enabling seamless switching between primary and backup modes. ［Result & Conclusion］ The proposed method significantly enhances the reliability and availability of the signaling system, ensuring seamless operations during failures, maintaining system stability and continuity under high-density operations.
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