摘要
接触网覆冰会导致牵引供电系统事故频发,严重时甚至导致列车大面积停运。直流融冰装置可以有效解决接触网覆冰问题,但融冰所需直流电若流经钢轨和扼流变压器,会对轨道电路及其信号传输产生影响。融冰过程中产生大量焦耳热也会导致接触网补偿装置a、b值变化,其值一旦低于阈值将无法保证受电弓和接触线之间的可靠接触,威胁铁路安全稳定运行。本文就直流融冰装置融冰过程中对轨道电路和接触网补偿装置的影响展开研究与分析,首先通过对轨道电路和扼流变的影响探讨单线融冰技术方案的可行性,然后就融冰装置产生焦耳热对接触网补偿装置的影响进行研究,为融冰电流和持续时间参考值的选取提供参考。
OCS ice coating can lead to frequent accidents in the traction power supply system,and in severe cases,even cause large-scale train shutdowns.The DC ice melting device can effectively solve the problem of OCS ice coating,but if the DC current required for ice melting flows through the rail and choke transformer,it will have an impact on the track circuit and its signal transmission.During the process of ice melting,a large amount of Joule heat is generated,which can also cause changes in the values a and b of OCS compensation device.Once their values are below the threshold,reliable contact between the pantograph and the contact wire cannot be guaranteed,posing a threat to the safe and stable operation of the railway.The paper studies and analyzes the influence of DC ice melting device on track circuit and OCS compensation device during the ice melting process.Firstly,the feasibility of single line ice melting technology scheme is explored through the influence of track circuit and choke current.Then,the studies are made on the influence of Joule heat generated by the ice melting device on the OCS compensation device,providing reference for the selection of reference values for ice melting current and duration.
作者
黄国胜
刘彻
张硕
伏松平
吴命利
李腾
HUANG Guosheng;LIU Che;ZHANG Shuo;FU Songping;WU Mingli;LI Teng
出处
《电气化铁道》
2025年第3期6-12,共7页
Electric Railway
基金
中国铁建股份有限公司科研课题“铁路接触网冰冻灾害预警与治理关键技术及主要装备研究”(2021-C44)。
关键词
直流融冰
轨道电路
补偿装置
影响
DC ice melting
track circuit
compensation device
influence
