基于故障树模型的地铁750V牵引供电系统安全风险评估  

Risk assessment of metro DC750 V power supply system operation based on fault tree model

作　　者：徐田坤[1] 梁青槐[1] 任星辰[1] 

机构地区：[1]北京交通大学城市轨道交通研究中心,北京100044

出　　处：《北京交通大学学报》2012年第6期57-62,共6页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

摘　　要：通过对影响750 V直流牵引供电系统故障因素的分析,利用事故致因理论、故障树模型和概率论相关理论结构度、概率度、临界度计算,得出影响750V断电事故的主要因素,并提出相应的风险控制措施.结果表明该方法对750V供电系统安全风险评估、部件影响分析、薄弱环节识别,以及为管理者的决策具有一定的参考价值,对保证地铁运营安全具有重要意义.This paper analyzes the fault factors of DC750 V traction power supply system and uses the theories such as accident-causing theory,fault tree model theory and probability theory to establish the fault tree model with the DC750 V electricity accident as the top event.By calculating the structure degree,probability degree and critical degree of the bottom event in the DC750 V electricity accident,we can obtain the primary causes to the interruption of DC750 V power supply and propose the corresponding risk control measures.It turns out to be that this method has a certain reference value for the security risk assessment,analysis of the component effects and identification of the weak links of the DC750 V power supply system security.It can provide a basis for the manager to make decisions and has a great value to assure the subway operation security.

关 键 词：供电系统 750V断电事故 故障树模型 风险控制 

分 类 号：U231.8[交通运输工程—道路与铁道工程] O157.5[理学—数学]