高速铁路信号系统雷击瞬态传输特性研究  

Study on Lightning Transient Transmission Characteristics of High Speed Railway Signal System

作　　者：王州龙 WANG Zhoulong(Institute of communication and signaling,China Academy of Railway Sciences Group Co.,Ltd.,Beijing 100081,China)

机构地区：[1]中国铁道科学研究院集团有限公司通信信号研究所,北京100081

出　　处：《铁道标准设计》2022年第5期177-182,共6页Railway Standard Design

基　　金：国家自然科学基金高铁联合基金项目(U183420024)。

摘　　要：信号系统承受雷击电磁瞬态干扰能力弱,要掌握雷击电磁脉冲对信号系统影响的程度,需研究雷击电磁脉冲在信号系统的瞬态传输特性。研究基于黑箱技术的铁路信号系统雷击瞬态过程建模方法,以调谐匹配单元为例,详细分析其雷击瞬态建模过程,并采用雷电冲击差模传递特性试验验证模型的有效性。通过建立多设备级联模拟试验系统,开展多设备级联雷电冲击共模、差模传递特性验证,得到级联系统对雷击共模传递特性及差模传递特性:级联系统对共模雷电冲击信号的衰减主要依靠隔离变压器,对差模雷电冲击信号无明显衰减作用。通过对比级联系统雷电冲击共模、差模试验结果与级联系统模型计算结果,得到模型计算误差不超过8%,满足工程应用需求。As the ability of signal system to withstand lightning electromagnetic transient interference is weak,the transient transmission characteristics of lightning electromagnetic pulse in signal system should be studied to control the influence of lightning electromagnetic pulse on signal system.In this paper,the lightning transient modeling method of railway signal system based on black box technology is studied.Taking the tuning matching unit as an example,this paper analyzes the lightning transient modeling process in detail,and verifies the validity of the model by the lightning impulse differential mode transfer characteristic test.With the establishment of multi equipment cascading simulation test system,the common mode and differential mode transfer characteristics of multi equipment cascading lightning impulse are verified,and the common mode transfer characteristics and differential mode transfer characteristics of cascading system are obtained.The attenuation of common mode lightning impulse signal of cascading system mainly depends on isolation transformer,but has no obvious attenuation effect on differential mode lightning impulse signal.The comparison of the common mode and differential mode test results of cascading system lightning impulse with the calculation results of cascading system calculation model shows that the calculation error of the model is less than 8%,which meets the requirements of engineering application.

关 键 词：高速铁路 信号系统 雷击电磁脉冲 瞬态传输特性 级联系统 

分 类 号：U284.93[交通运输工程—交通信息工程及控制] U238[交通运输工程—道路与铁道工程]