基于不同接地方式与列车工况的负阻变换器牵引供电系统轨道电位与杂散电流

doi:10.19595/j.cnki.1000-6753.tces.200869

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Abstract For the safety problems caused by rail potential and stray current in urban rail transit, this paper proposes a negative resistance converter traction power system (NRC-TPS). Based on the conventional traction power system (CON-TPS), power electronic equipment is installed directly for NRC-TPS, where the return path of train current is shortened through providing a zero-resistance loop for the train current. Since the source of stray current is reduced, rail potential and stray current are mitigated in NRC-TPS. Besides, considering different grounding schemes of traction substations and multiple train conditions, this paper discusses the working principle of NRC-TPS as well as the distribution of rail potential and stray current in detail. The results indicate that NRC-TPS can effectively reduce rail potential and stray current without modifying basic components such as trains or rails, which shows good application prospects in both existing and new urban rail transits.

Key words： Urban rail transit rail potential stray current negative resistance converter (NRC) grounding scheme

Received: 17 July 2020

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TM922

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	Gu Jingda
	Yang Xiaofeng
	Trillion Q. Zheng
	Shang Zhan
	Zhao Zhijun

Cite this article:

Gu Jingda,Yang Xiaofeng,Trillion Q. Zheng等. Rail Potential and Stray Current on Negative Resistance Converter Traction Power System under Different Grounding Schemes and Train Conditions[J]. Transactions of China Electrotechnical Society, 2021, 36(8): 1703-1717.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.200869 OR https://dgjsxb.ces-transaction.com/EN/Y2021/V36/I8/1703

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