系统理论过程分析在城市轨道交通列车运行控制系统设计中的应用

使用STPA(系统理论过程分析)安全分析方法,针对北京燕房线实际设计案例中的典型系统级危险源,选取列车进站停车运营场景建立相应的分层控制结构模型,辨识不安全控制行为,分析列车运行过程中的危险致因和安全约束,结合实际工程项目转化为切实可行的安全需求和防护措施。表明STPA方法分析过程全面深入,不仅可以分析技术系统,还可以分析运营组织中的人为因素,可以更加全面辨识运营场景中所涉及的危险致因。

Application of STPA in the Design of Train Control System for Urban Rail Transit

Aiming at the typical hazard source on system level in a case analysis of Beijing Yanfang Line design,and based on STPA method,the operation scenario of train stopping and parking at station is chosen to establish a safety hierarchical control structure model,which is used to identify the unsafe control behaviors,analyze the risk factors and safety constraints in train operation,and finally design protection measures to meet practical safety requirements by combining with the actual project.The application of the model shows that STPA method can analyze both the technical system and the human factors in the organization system more comprehensively,and identify all of the related causal factors in the operation scenario.