25 Hz轨道电路抗电气化脉冲干扰的研究  

Study on Solutions of Immunity to Impulsive Interference in 25 Hz Series Track Circuit

作　　者：杨世武[1] 费锡康[1] 吴运熙[1] 马宏杰 

机构地区：[1]北方交通大学电子信息工程学院

出　　处：《铁道学报》1999年第2期58-62,共5页Journal of the China Railway Society

基　　金：铁道部科技发展计划项目

摘　　要：指出了电气化铁道的不平衡牵引电流脉冲干扰是造成２５Ｈｚ轨道电路产生误动的主要原因，对抗脉冲干扰的方法进行了理论分析，提出了一种扼流适配变压器（ＢＥＳ）方案，即对扼流变压器开气隙和５０Ｈｚ串联谐振电路进行综合设计，不仅可以大大减小干扰功率，还改善了信号的传输特性。计算和现场应用表明，此方案显著提高了２５Ｈｚ轨道电路的抗脉冲干扰能力。At first, this paper points out that the impulsive interference of unbalanced traction current is the principal reason causing degradation of 25 Hz track circuit. After analyzing the basic theory of anti interference, we present a new solution by a so called impedance match transformer (BES), which includes impedance transformer with air gap and 50 Hz series resonant circuit. The calculation and application show that this design can remarkably lower the influence of interference and improve the signal transmission.

关 键 词：轨道电路 脉冲干扰 扼流适配变压器 

分 类 号：U284.261[交通运输工程—交通信息工程及控制]