牵引电流谐波对轨道电路接收电压影响分析  

Influence Analysis of Traction Current Harmonic on Receiving Voltage of Track Circuit

作　　者：乔志超 魏子钧 杨轶轩 杨世武[2] QIAO Zhichao;WEI Zijun;YANG Yixuan;YANG Shiwu(CRSC Research&Design Institute Group Co.,Ltd.,Beijing 100070,China;School of Electronic and Information Engineering,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]北京全路通信信号研究设计集团有限公司,北京100070 [2]北京交通大学电子信息工程学院,北京100044

出　　处：《中国铁路》2023年第1期103-109,共7页China Railway

基　　金：自然科学横向项目(W21L00680)。

摘　　要：随着电力机车型号越来越丰富,其引入的谐波干扰导致轨道电路电压波动问题,干扰信号设备稳定工作,影响运输效率。在分析牵引电流谐波干扰机理的基础上,研究不同频率的谐波干扰对于ZPW-2000系列轨道电路接收电压的影响。分析牵引电流谐波对轨道电路设备的干扰路径,基于轨道电路四端口网络模型,提出谐波转移阻抗参数,从而就不同频率的谐波电流对轨道电路接收电压的影响进行定量分析和评估;针对典型案例,采用频域分析方法,结合现场测试数据,对模型的有效性予以验证;并简要分析现行标准中对于带外谐波限值的规定,为防护牵引电流谐波干扰提供参考。With the increasing number of electric locomotive models,the harmonic interference caused by them leads to the voltage fluctuation of track circuits,interferes with the stable operation of signaling equipment,and affects the transport efficiency.Based on the analysis of the harmonic interference mechanism of traction current,this paper studies the influence of harmonic interference of different frequencies on the receiving voltage of ZPW-2000 series track circuits.It analyzes the interference path of traction current harmonics to track circuit equipment,and proposes harmonic transfer impedance parameters on the basis of the four-port network model of track circuit,so as to quantitatively analyze and evaluate the influence of harmonic currents of different frequencies on the receiving voltage of track circuit.For typical cases,the frequency domain analysis method is adopted to verify the validity of the model in combination with field test data.The provisions on outof-band harmonic limits in the current standards are briefly analyzed,providing a reference for protection against harmonic interference of traction current.

关 键 词：轨道电路 牵引电流 谐波干扰 四端口网络 频域分析 

分 类 号：U284[交通运输工程—交通信息工程及控制]