基于多导体传输线的高速铁路站内机车信号邻线干扰研究  

Research on Adjacent Line Interference on Cab Signaling in High-speed Railway Station Based on Multi-conductor Transmission Line Theory

作　　者：刘希高 杨世武[1] LIU Xigao;YANG Shiwu(School of Electronic and Information Engineering,Beijing Jiaotong University,Beijing 100044,China;Beijing Hollysys Co.,Ltd.,Beijing 100176,China)

机构地区：[1]北京交通大学电子信息工程学院,北京100044 [2]北京和利时系统工程有限公司,北京100176

出　　处：《铁道学报》2024年第10期76-85,共10页Journal of the China Railway Society

基　　金：中铁二院工程集团有限责任公司科研项目(KYY2020);站内轨道电路电磁干扰耦合特性研究(W21L00680)。

摘　　要：ZPW-2000系列轨道电路广泛应用于高速铁路区间及站内,其中站内邻线干扰问题较为复杂。为防止高速铁路站内机车信号邻线干扰导致CTCS-2和CTCS-3级列控系统车载设备误动作的情况,对站内邻线干扰的分析是非常必要的。基于多导体传输线微分方程,推导多导体传输线的阻抗差分方程和导纳差分方程。在多导体传输线差分方程的基础上,进一步建立包括轨道区段、发送设备和接收设备等的轨道电路邻线干扰模型,并对比现场数据和仿真数据,验证模型的正确性。最后,通过对机车信号邻线干扰模型的计算仿真,研究区段并行长度、线路间距、线路角度、道砟电阻和功放电压等因素对于机车信号邻线干扰数值的影响规律,主要结论为:对于同向载频干扰,机车信号干扰电流最大值随着线路间距和线路角度增大而逐渐减小,设计时线路间距不宜小于5 m,合理设置道岔区段可降低干扰;随着功放电压和道砟电阻增大而逐渐增大,设计时应采用低功放电压设计和当地可能达到的最大道砟电阻。With the wide use of ZPW-2000 series track circuits in high-speed railway section and station scenarios,the interference from adjacent lines in the station is more complicated.In order to prevent the malfunction of the on-board equipment of CTCS-2 and CTCS-3 caused by the interference of cab signaling adjacent lines in the high-speed railway station,,analysis on the interference of adjacent lines in the station is required.Based on the differential equation of multi-conductor transmission lines,this paper derived the impedance difference equation and the admittance difference equation for multi-conductor transmission lines.Based on the differential equation of multi-conductor transmission line,the adjacent line interference model of track circuit including track section,transmitting equipment and receiving equipment was further established,and the correctness of the model was verified by comparing the field data and simulation data.Finally,through the calculation and simulation of the cab signaling adjacent line interference model,the influence of section parallel length,line spacing,line angle,track bed resistance and power amplifier voltage on the adjacent line interference value of cab signaling was studied.The results show that for co-directional carrier frequency interference,as the maximum value of cab signaling interference current gradually decreases with the increase of line spacing and line angle,the line spacing should not be less than 5 m during design,and reasonable setting of turnout sections can reduce interference.Given that the maximum value of cab signaling interference current increases as the amplifier voltage and bed resistance increase,a low amplifier voltage design and the maximum possible local bed resistance should be used.

关 键 词：高速铁路 轨道电路 多导体传输线 机车信号 邻线干扰 

分 类 号：U284.261[交通运输工程—交通信息工程及控制]