城轨信号系统雨雪模式列车速度防护设计方案研究  

Research on Design Scheme of Train Speed Protection Under Rain and Snow Mode for Signal System of Urban Rail Transit

作　　者：王恒 何浩洋 杨莹莹 WANG Heng;HE Haoyang;YANG Yingying

机构地区：[1]南京恩瑞特实业有限公司,南京211106

出　　处：《铁道通信信号》2024年第10期74-79,共6页Railway Signalling & Communication

基　　金：江苏省科技成果转化项目(BA2022013)。

摘　　要：结合城轨信号系统速度防护和自动驾驶的设计原理,对列车速度防护曲线计算进行分析;针对安全制动模型中制动阶段的电空制动转化过程,提出电空制动计算模型;结合ATP、ATO子系统速度控制过程,重点针对雨雪天气列车极易发生的打滑现象,设计雨雪模式防护方案。提出通过降低列车运行速度和输出较小的紧急制动率,有效减少车辆打滑问题;同时,结合具体工程线路,在不同轮轨间黏着系数下,计算列车可保证紧急制动率,设置不同雨雪模式等级下匹配的紧急制度率和临时限速值,并对雨雪模式进行监控。最后在实验室进行功能验证,为城轨信号系统在雨雪天气下的安全控制提供借鉴。Based on the design principles of urban rail transit signal system speed protection and automatic driving,the calculation of train speed protection curves was analyzed.An electropneumatic braking calculation model was proposed for the electropneumatic braking conversion process in the braking stage of the safety braking model.On the basis of the speed control process of ATP and ATO subsystems,focusing on the highly-probable sliding phenomenon of trains in rainy and snowy weather,a rain and snow mode protection scheme was designed.It was proposed to effectively reduce the problem of vehicle sliding by reducing the train's operating speed and outputting a smaller emergency braking ratio.Additionally,based on specific engineering lines,the guaranteed emergency braking ratios of the train were calculated with different adhesion coefficients between wheels and rails,and emergency braking ratios and temporary speed limits that match different levels of rain and snow modes were also set,and the rain and snow modes were monitored.Finally,functional verification was conducted in the laboratory,providing a reference for the safety control of urban rail signal systems under rainy and snowy weather.

关 键 词：城市轨道交通 速度防护 雨雪模式 安全制动模型 可保证紧急制动率 列车打滑 

分 类 号：U231[交通运输工程—道路与铁道工程]