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.
顾靖达, 杨晓峰, 郑琼林, 商战, 赵治钧. 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[J]. 电工技术学报, 2021, 36(8): 1703-1717.
Gu Jingda, Yang Xiaofeng, Trillion Q. Zheng, Shang Zhan, Zhao Zhijun. Rail Potential and Stray Current on Negative Resistance Converter Traction Power System under Different Grounding Schemes and Train Conditions. Transactions of China Electrotechnical Society, 2021, 36(8): 1703-1717.
[1] 杜贵府, 张栋梁, 王崇林, 等. 直流牵引供电系统电流跨区间传输对钢轨电位影响[J]. 电工技术学报, 2016, 31(11): 129-139. Du Guifu, Zhang Dongliang, Wang Chonglin, et al.Effect of traction current transmission among power sections on rail potential in DC mass transit system[J]. Transactions of China Electrotechnical Society, 2016, 31(11): 129-139. [2] Alamuti M M, Nouri H, Jamali S.Effects of earthing systems on stray current for corrosion and safety behaviour in practical metro systems[J]. IET Electrical Systems in Transportation, 2011, 1(2): 69-79. [3] Zaboli A, Vahidi B, Yousefi S, et al.Evaluation and control of stray current in DC-electrified railway systems[J]. IEEE Transactions on Vehicular Techno- logy, 2017, 66(2): 974-980. [4] Xu Shaoyi, Li Wei, Wang Yuqiao.Effects of vehicle running mode on rail potential and stray current in DC mass transit systems[J]. IEEE Transactions on Vehicular Technology, 2013, 62(8): 3569-3580. [5] Tzeng Y, Lee C.Analysis of rail potential and stray currents in a direct-current transit system[J]. IEEE Transactions on Power Delivery, 2010, 25(3): 1516-1525. [6] Cotton I, Charalambous C, Aylott P, et al.Stray current control in DC mass transit systems[J]. IEEE Transactions on Vehicular Technology, 2005, 54(2): 722-730. [7] Ogunsola A, Mariscotti A, Sandrolini L.Estimation of stray current from a DC-electrified railway and impressed potential on a buried pipe[J]. IEEE Transactions on Power Delivery, 2012, 27(4): 2238-2246. [8] Paul D.DC stray current in rail transit systems and cathodic protection[History][J]. IEEE Industry Appli- cations Magazine, 2016, 22(1): 8-13. [9] Memon S A, Fromme P.Stray current corrosion and mitigation: a synopsis of the technical methods used in DC transit systems[J]. IEEE Electrification Magazine, 2014, 2(3): 22-31. [10] Lee C, Lu C.Assessment of grounding schemes on rail potential and stray currents in a DC transit system[J]. IEEE Transactions on Power Delivery, 2006, 21(4): 1941-1947. [11] Niasati M, Gholami A.Overview of stray current control in DC railway systems[C]//IET International Conference on Railway Engineering, Hong Kong, China, 2008: 1-6. [12] 秦强强, 张娇, 李宇杰, 等. 基于列车运行状态的城轨地面混合储能装置分时段控制策略[J]. 电工技术学报, 2019, 34(增刊2): 760-769. Qin Qiangqiang, Zhang Jiao, Li Yujie, et al.Research on time-phased control strategy of urban rail ground hybrid energy storage device based on train operation status[J]. Transactions of China Electrotechnical Society, 2019, 34(S2): 760-769. [13] 秦强强, 郭婷婷, 林飞, 等. 基于能量转移的城轨交通电池储能系统能量管理和容量配置优化[J]. 电工技术学报, 2019, 34(增刊1): 414-423. Qin Qiangqiang, Guo Tingting, Lin Fei, et al.Optimal research for energy management and con- figuration of battery ESS in urban rail transit based on energy transfer[J]. Transactions of China Electro- technical Society, 2019, 34(S1): 414-423. [14] Paul D.DC traction power system grounding[J]. IEEE Transactions on Industry Applications, 2002, 38(3): 818-824. [15] Fichera F, Mariscotti A, Ogunsola A, et al.Com- parison of distributed and lumped parameters stray current models[C]//IEEE Africon Conference, Pointe- Aux-Piments, Mauritius, 2013: 1-5. [16] Yang Zhihong, Yang Zhongping, Lin Fei, et al.Adjustment of metro train operation curve for efficiently using regenerative energy[C]//the 42nd Annual Industrial Electronics Conference, Firenze, Italy, 2016: 3806-3811. [17] 杨晓峰, 薛皓, 郑琼林. 基于双向可变电阻模块的杂散电流与轨道电位动态模拟系统[J]. 电工技术学报, 2019, 34(13): 2793-2805. Yang Xiaofeng, Xue Hao, Trillion Q.Zheng. Stray current and rail potential dynamic simulation system based on bidirectional variable resistance module[J]. Transactions of China Electrotechnical Society, 2019, 34(13): 2793-2805.
2021, Vol. 36 
