摘要
我国正在规划400 km/h高速铁路,在更高速度下信号系统和接地系统的适应性有待于全面分析和评估。本文结合中国高速铁路背景,关注牵引供电系统中的主要设计参数,对比连续模型与节点模型,针对AT供电复线条件,搭建其参数可变的节点电压模型并进行仿真计算;对贯通地线截面积及其正常条件下的载流量、暂态条件下的熔断电流等特性对牵引电流分布的影响进行研究,并得出TJ-70型贯通地线能满足400 km/h条件下绝大部分情况泄流要求的结论。
China is working on the 400 km/h High-speed Railway(HSR).The compatibility of integrated earthing system and railway signalling system under higher speed is not yet comprehensively analyzed and evaluated.Firstly,with the background of China's high-speed railway,this paper combined main design parameters with relevant theories of Traction Power Supply System(TPSS),compared system node model with continuous mathematical model and established a double-line Auto-Transformer(AT)power supply node model with variable parameters.Moreover。retwm current distribution scale of tracetion network lines was calculated and compared with railway field data.Lastly,the model discused diferent railway through-ground wire(GW)diameters along with its impact on traction current distribution,wire current-carrying capacity under normal condition and wire fusing current under transient condition.The results show the type of TJ-70 through-ground wire meets the urrent-carrying requirements of 400 km/h HSR in most simulation cases.
作者
张硕
刘倡
陈炳均
杨世武
ZHANG Shuo;LIU Chang;CHEN Bingjun;YANG Shiwu(Beijing China Railway Construction Eletrifeation Design&Research Institute Co.Ld,Beijjig 100043,China;School of Electronie and Information Engineering,Bejjing Jiaotong Univerity,Beijing 0004,China;China Railway Eryuan Engineering Group Co.Ltd,Chengdu Sichuan 610031,China)
出处
《铁道建筑技术》
2020年第4期120-124,共5页
Railway Construction Technology
基金
中国铁路总公司技术标准编制项目(16CR066)。
关键词
高速铁路
贯通地线
综合接地
牵引电流
建模仿真
high-speed railway
through-ground wire
integrated grounding
traction current
simulation model
