Abstract：Rail potential and stray current issues, which endanger the safety of urban rail transit, are unavoidable in the DC traction power supply system with rail returning current. But it is difficult to verify the inhibition measures of the above issues in field. Therefore, this paper proposes a dynamic emulator of power electronics based on variable resistance module. The three-dimension distribution of rail potential and stray current varying with train position in bilateral power supply system with different grounding modes are analyzed. Combining the dynamic emulator, traction substation and train traction current, the rail potential and total stray current of the train and traction under different grounding modes are reproduced by the dynamic emulator. Finally, the correctness and feasibility of the experimental platform of rail potential and stray current flow model are verified by simulation and experimental results.
王慧康, 杨晓峰, 倪梦涵, 郑琼林. 轨道电位与杂散电流动模实验平台[J]. 电工技术学报, 2020, 35(17): 3609-3618.
Wang Huikang, Yang Xiaofeng, Ni Menghan, Zheng Trillion Q. Rail Potential and Stray Current Dynamic Emulator. Transactions of China Electrotechnical Society, 2020, 35(17): 3609-3618.
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2020, Vol. 35 
