中低速磁浮交通接地系统研究综述*

doi:10.11985/2023.03.004

摘要/Abstract

摘要：

中低速磁浮交通系统单设回流轨结构虽然解决了常规走行轨道的杂散电流问题，但处于悬浮电位的接地系统使得其保护接地、防雷接地及电磁兼容等方面都不能简单沿用普通轮轨列车的接地方式，需要单独展开研究。首先介绍了中低速磁浮交通接地回流系统的特点；进一步从保护接地、防雷接地、以及接地系统的电磁兼容性三个方面对中低速磁浮交通接地系统进行分析，归纳总结其接地系统在接地故障点识别、雷击车体过电压、车体放电等方面存在的问题；最后探讨了针对以上问题的解决方案，包括64D接地保护装置改进及故障点识别优化、雷击车体过电压抑制方法以及电流泄放的电磁兼容性提升等，对中低速磁浮交通接地系统的设计方案提供全面参考。

关键词: 接地系统, 中低速磁浮, 保护接地, 防雷接地, 电磁兼容, 故障识别

Abstract:

The specific energy granting-returning structure of medium and low speed maglev transportation system could contribute to solving stray current issues of conventional running track. But, the grounding system in suspension potential makes it impossible to simply follow the grounding method of ordinary wheeled trains in terms of protective grounding, lightning protection and electromagnetic compatibility, and needs to be studied separately. Therefore, it is necessary to explore the adaptability of medium and low speed maglev transportation grounding system. The characteristics of grounding system is introduced primarily followed by the further analysis from aspects of protection grounding, lightning protection grounding and electromagnetic compatibility grounding. In addition, issues in the identification of grounding fault point, lightning car body overvoltage, body discharge and so on are summarized. Finally, solutions to solve problems proposed before are discussed including the improvement of 64D grounding protection device, the optimization of fault point identification, the suppression method of lightning body overvoltage, and the improvement of electromagnetic compatibility of current discharge. It is hopeful to provide a comprehensive reference for the configuration scheme of medium and low speed transportation system.

Key words: Grounding system, medium and low speed maglev, protective grounding, lightning protection and grounding, electromagnetic compatibility, fault identification

中图分类号:

TM561

闫宁宁, 王健, 孙继星, 李庆民. 中低速磁浮交通接地系统研究综述^*[J]. 电气工程学报, 2023, 18(3): 35-45.

YAN Ningning, WANG Jian, SUN Jixing, LI Qingmin. Review of Research on Medium and Low Speed Maglev Transportation Grounding Systems[J]. Journal of Electrical Engineering, 2023, 18(3): 35-45.

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