回流电抗器在高铁站内轨端绝缘烧损中的应用  

Application of Reflux Reactor in Solving Problem of Insulation Burning at Station Rail End

作　　者：张博 Zhang Bo

机构地区：[1]北京全路通信信号研究设计院集团有限公司

出　　处：《铁路通信信号工程技术》2019年第A01期16-19,共4页Railway Signalling & Communication Engineering

摘　　要：回流电抗器是移频脉冲轨道电路系统的重要组成部分,其原理是对对牵引电流(50Hz)呈现低阻特性,可使股道两侧方向均具备回流通道,实现双向回流;对移频信号呈高阻特性,串入回路不形成“第三轨”情况。实际工程应用中发现,在ZPW-2000A无绝缘轨道电路系统中使用回流电抗器,也可以解决站内轨端绝缘烧损的问题。The refl ux reactor is an important part of frequency-shift pulse track circuit system.The principle is to present low resistance characteristic to traction current(50Hz)to realize two-way refl ow,and to present high-resistance characteristic to frequency-shift signal to not form a"third track"in the loop-in circuit.In practical engineering applications,it has been found that the use of refl ux reactor in the ZPW-2000A jointless track circuit system can also solve the problem of insulation burning at the rail end of the station.

关 键 词：回流电抗器 绝缘烧损 双向回流 ZPW-2000A无绝缘轨道电路 

分 类 号：TM4[电气工程—电器]