接触网系统可靠性的马尔科夫建模分析  

Markov Model for Analyzing Catenary System Reliability

作　　者：王思华[1] 赵琼[1] 马军党[1] 车玉龙[1] 

机构地区：[1]兰州交通大学自动化与电气工程学院

出　　处：《中国安全科学学报》2013年第9期39-44,共6页China Safety Science Journal

基　　金：铁道部重点项目(2012J007-C);高校基本科研业务费专项资助项目(212099)

摘　　要：为分析接触网可靠性,根据接触网特性,结合马尔科夫过程,对接触网系统进行可靠性建模。推导了接触网系统的可用度、平均故障频度、平均修复时间等可靠性特征量的计算公式。将该模型及特征量计算公式应用于实例中。计算接触网系统可靠性,且对比分析维修与不维修2种情况下的计算结果。结果表明:若不对接触网进行维修,接触网可用度会随运行时间的延长而不断下降;而若进行适当维修,其可用度会在一定时间范围内保持稳定。In order to analyze the catenary system reliability, according to the characteristics of catenary system, a mathematical analysis model for the catenary system reliability was built by Markov theory process. Characteristics of the availability, the average failure frequency, the mean failure time and other reliability characteristic quantities of catenary system were derived. A section of railway in China was taken as an ex- ample, its catenary system reliability was calculated using model and the formula of characteristic quantities. Effects of maintenance on reliability were observed. Analysis result indicates that without maintenance, the catenary system availability cannot be kept stable in an extended time period.

关 键 词：接触网系统 串联可修系统 马尔科夫模型 可用度 可靠性 

分 类 号：X913.4[环境科学与工程—安全科学] U225[交通运输工程—道路与铁道工程]