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基于FDTD接口方法的ZPW-2000轨道电路暂态分析

王梓丞 郭进 张亚东 苏丽娜 孙宁先 陈名宝

王梓丞, 郭进, 张亚东, 苏丽娜, 孙宁先, 陈名宝. 基于FDTD接口方法的ZPW-2000轨道电路暂态分析[J]. 西南交通大学学报, 2019, 54(1): 196-201, 218. doi: 10.3969/j.issn.0258-2724.20180020
引用本文: 王梓丞, 郭进, 张亚东, 苏丽娜, 孙宁先, 陈名宝. 基于FDTD接口方法的ZPW-2000轨道电路暂态分析[J]. 西南交通大学学报, 2019, 54(1): 196-201, 218. doi: 10.3969/j.issn.0258-2724.20180020
WANG Zicheng, GUO Jin, ZHANG Yadong, SU Lina, SUN Ningxian, CHEN Mingbao. Transient Analysis of ZPW-2000 Track Circuit Based on FDTD Interface Method[J]. Journal of Southwest Jiaotong University, 2019, 54(1): 196-201, 218. doi: 10.3969/j.issn.0258-2724.20180020
Citation: WANG Zicheng, GUO Jin, ZHANG Yadong, SU Lina, SUN Ningxian, CHEN Mingbao. Transient Analysis of ZPW-2000 Track Circuit Based on FDTD Interface Method[J]. Journal of Southwest Jiaotong University, 2019, 54(1): 196-201, 218. doi: 10.3969/j.issn.0258-2724.20180020

基于FDTD接口方法的ZPW-2000轨道电路暂态分析

doi: 10.3969/j.issn.0258-2724.20180020
基金项目: 国家自然科学基金青年基金资助项目(61703349);中国铁路总公司关键研究计划资助项目(2017X007-D);中央高校基本科研业务费专项资金资助项目(2682017CX101,2682017ZDPY10);甘肃省高原交通信息工程及控制重点实验室资金资助项目(20161103)
详细信息
    作者简介:

    王梓丞(1990—),男,博士研究生,研究方向为信号系统故障检测与健康管理技术,E-mail: wangzc90@my.swjtu.edu.cn

    通讯作者:

    郭进(1960—),男,教授,研究方向为信号系统可靠性与安全分析技术,E-mail: jguo_scce@home.swjtu.edu.cn

  • 中图分类号: U284.2

Transient Analysis of ZPW-2000 Track Circuit Based on FDTD Interface Method

  • 摘要: 轨道电路在列车驶入/出清时存在暂态过程,可以利用接收端信号的暂态突变对轨道电路的状态进行判断. 时域有限差分(finite-difference,time-domain,FDTD)方法是求解传输线的常用数值解法,但ZPW-2000轨道电路结构比一般轨道电路更加复杂,直接采用FDTD法并不适用. 基于此,提出了一种基于FDTD和ATP-EMTP(alternative transients program-electromagnetic transients program)接口模型的ZPW-2000轨道电路暂态分析方法. 该方法将整个模块分为传输线与集中参数网络两个部分,其中,传输线采用FDTD求解,集中参数网络在ATP-EMTP中计算,两个部分用受控电流源关联. 对ZPW-2000轨道电路的仿真结果表明:道床电阻和分路电阻对接收端信号幅值有较大的影响,当道床电阻降至0.6 Ω•km时接收端电压从2.0 V下降到0.5 V左右,当分路电阻增至0.2 Ω时接收端残压达到了1.0 V左右,此时若仅采用门限比对的方法难以区分轨道电路的状态;然而,在列车驶入/出清的瞬间,接收端信号存在暂态突变,可根据突变特性实现轨道电路分路态的检测.

     

  • 图 1  FDTD分析时传输线的离散化

    Figure 1.  Discretization of transmission line for FDTD analysis

    图 2  ZPW-2000轨道电路基本结构

    Figure 2.  Basic structure of the ZPW-2000 track circuit

    图 3  端接集中参数元件传输线的FDTD & ATP-EMTP接口方案   

    Figure 3.  FDTD and ATP-EMTP interface scheme for transmission lines with lumped loads at line terminations

    图 4  并联集中参数元件传输线的FDTD & ATP-EMTP接口方案  

    Figure 4.  FDTD and ATP-EMTP interface scheme for transmission lines including shunt-connected components

    图 5  基于FDTD & ATP-EMTP接口技术的传输线暂态分析模型

    Figure 5.  Transient analysis model of transmission lines based on FDTD and ATP-EMTP interface technique

    图 6  示例1与示例2的仿真验证结果及对比

    Figure 6.  Simulation results and comparison of examples 1 and 2

    图 7  基于FDTD & ATP-EMTP接口技术的ZPW-2000轨道电路暂态分析模型

    Figure 7.  Transient analysis model of ZPW-2000 track circuit based on FDTD and ATP-EMTP interface technique

    图 8  列车驶入及出清时接收端信号仿真结果

    Figure 8.  Simulation results of the receiving-end signal when the train enters or departs

    图 9  道床电阻对接收端信号幅值包络的影响

    Figure 9.  Effect of the ballast resistance on the amplitude envelope of receiving-end signals

    图 10  列车驶入和出清时分路电阻对接收端信号幅值包络的影响

    Figure 10.  Effect of the shunt resistance on the amplitude envelope of receiving-end signals when train enters or departs

    表  1  轨道电路参数信息

    Table  1.   Basic parameters of the track circuit

    载频/Hz 长度/m 补偿电容 模拟电缆
    长度/km
    真实电缆
    长度/km
    发送电压
    /V
    匹配变压
    器变比
    道床电阻
    /(Ω•km)
    数量 容值/μF 间距/m
    1 700 848 10 40 80 7、6 2.74、3.62 89.7 1∶11 5
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出版历程
  • 收稿日期:  2018-01-25
  • 修回日期:  2018-04-28
  • 网络出版日期:  2018-07-11
  • 刊出日期:  2019-02-01

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