25 Hz相敏轨道电路站内漏解锁问题分析与研究-《高速铁路技术》

文章信息/Info

Title:: Analysis and Study on Missing Release of 25 Hz Phase-sensitive Track Circuit in Stations

Author(s):: MA Jianzhong; Baoji Telecommunication and Signaling Depot of China Railway Xi’an Group Co., Ltd., Baoji 721000, China

Keywords:: missing release|25 Hz phase-sensitive track circuit|slow pick-up and release|single locomotive

摘要:: 随着铁路机车装备技术和线路基础质量的不断提高、机车牵引速度和线路基础允许运行速度的大幅提升，既有站内单机或轨道车高速通过时，轨道电路漏解锁的问题越来越多发，干扰了正常的运输秩序。本文从25 Hz相敏轨道电路解锁原理入手，分析了造成轨道电路漏解锁问题的原因，以案例为切入点，重点对不同轨道电路制式使用器材的缓吸缓放特性和联锁机扫描的周期特性进行了综合分析研究，从理论上给出了因轨道电路制式不同、使用器材特性差异造成的轨道电路漏解锁或瞬间占用丢失情况，阐述了导致站内轨道电路漏解锁问题的前因后果，并提出了整治措施和改进方案，供铁路信号工作者参考。

Abstract:: With the continual improvement of the technologies of locomotive equipment and the quality of railway foundation, which have significantly improved the traction speed of locomotives and the allowable running speed of railway foundation, missing release of the track circuit occurs more and more frequently when a single locomotive or a rail car passes an existing station at high speed, thus interfering with the normal transportation order. Starting with the release principle of 25 Hz phase-sensitive track circuit, this paper analyzes the causes of missing release of track circuit. For this purpose, a case is studied to comprehensively analyze the slow pick-up and release characteristics of equipment used in different track circuit systems and the scanning period characteristics of interlocking machines, propose the theory that missing release or instantaneous loss of occupation of track circuit is caused by different track circuit systems and equipment characteristics, explain the causes and consequences of missing release of track circuit in stations, and suggest the remediation measures and improvement schemes as reference for railway signal technicians.