基于可靠性真值表的JTC补偿电容重要性评估  

Importance evaluation of JTC compensation capacitor based on reliability truth table

作　　者：武晓春[1] 洪玲 WU Xiaochun;HONG Ling(School of Automation and Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]兰州交通大学自动化与电气工程学院,兰州730070

出　　处：《北京航空航天大学学报》2023年第10期2579-2586,共8页Journal of Beijing University of Aeronautics and Astronautics

基　　金：国家自然科学基金(61661027)。

摘　　要：为实现不同位置补偿电容的重要性评估,得到对无绝缘轨道电路(JTC)影响较大的补偿电容位置,提出一种基于可靠性真值表的JTC补偿电容重要性评估方法。建立JTC调整态和分路态模型,并仿真得到补偿电容断线时全部故障类型的调整态接收电压和分路态分路电流幅值曲线;提取相应的接收电压和最小分路电流与其阈值进行对比分析,建立JTC可靠性真值表;基于可靠性真值表计算各补偿电容的重要度系数,并通过柱形图确定对JTC影响较大的补偿电容位置。结果表明:靠近接收端的第2个和第3个补偿电容对JTC的影响较大。所提方法可协助现场维修人员确定各补偿电容的维护优先级,为补偿电容的重点监测提供依据。A method based on a reliability truth table for evaluating the importance of jointless track circuit(JTC)compensation capacitor is developed in order to assess the significance of compensation capacitors at various points of JTC.Firstly,an adjustment state model and a shunt state of the JTC are established,then the received voltage and shunt current amplitude curves of all fault types when compensation capacitors are disconnected in the adjustment state and shunt state are obtained by simulation.Secondly,the corresponding received voltage and minimum shunt current are extracted and compared with their thresholds,so as to establish the JTC reliability truth table.Finally,the reliability truth table is used to calculate the importance coefficient of each compensation capacitor,and the column diagram is used to find the location of the compensation capacitors that have the greatest influence on JTC.The results show that the second and third compensation capacitors near the receiver have a great influence on JTC.This method can assist the field maintenance personnel to determine the maintenance priority of each compensation capacitor and provide the basis for the key monitoring and preventive maintenance of compensation capacitors.

关 键 词：无绝缘轨道电路 补偿电容 断线故障 可靠性真值表 重要性评估 

分 类 号：U284.2[交通运输工程—交通信息工程及控制]