摘要
接地系统是影响磁悬浮列车运营安全的重要因素,磁悬浮列车的车体构造、轨道结构和受流方式与其他轮轨交通方式明显不同,因此接地设计需特殊考虑。同时,随着轻量化的碳纤维复合材料在磁悬浮车体上的应用,该车体变为不良导体,无法通过车体将需要接地的设备接入大地,从而使接地系统成为碳纤维车体设计中的一个难题。基于此,该文分析碳纤维复合材料结构对车体接地回路的影响,在介绍磁悬浮列车主要接地技术分类后,针对碳纤维复合材料的车体结构,提出一套接地系统设计思路。后续在理论分析的基础上用Maxwell仿真软件搭建接地回路模型,仿真计算出车体接地回路电阻,最后分析接地回路中故障电流的分布以此评估接地系统的有效性。
The grounding system is an important factor affecting the operation safety of maglev train.The structure of maglev train body,track structure and current collection mode are obviously different from other wheel rail traffic modes,so the grounding design needs special consideration.At the same time,with the application of lightweight carbon fiber composite materials in the maglev car body,the car body has become a poor conductor,and the grounding equipment can not be connected to the earth through the car body,which makes the grounding system become a difficult problem in the design of carbon fiber car body.Based on this,this paper analyzes the influence of carbon fiber composite structure on the grounding circuit of car body.After introducing the main grounding technology classification of maglev train,a set of design ideas of grounding system for carbon fiber composite car body structure is proposed.Then,on the basis of theoretical analysis,the grounding circuit model is built with Maxwell simulation software,and the resistance of vehicle body grounding circuit is calculated by simulation.Finally,the distribution of fault current in grounding circuit is analyzed to evaluate the effectiveness of grounding system.
作者
蔡娇
王舒瑾
张立伟
杨君
申璐
Cai Jiao;Wang Shujin;Zhang Liwei;Yang Jun;Shen Lu(Information Technology Center Beijing Jiaotong University,Beijing 100044 China;School of Electrical Engineering Beijing Jiaotong University,Beijing 100044 China;CRRC Tangshan Co.Ltd,Tangshan 063035 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2021年第S02期746-754,共9页
Transactions of China Electrotechnical Society
基金
中央高校基本科研业务费资助项目(2019JBM320)。
关键词
磁悬浮列车
碳纤维复合材料车体
接地系统设计
铝合金框架
接地回路
Magnetically levitated train
carbon fiber composite car body
grounding system design
aluminum alloy frame
grounding circuit
