Abstract With the rapid development of urban rail transit, the safety problems caused by stray current and rail potential are increasingly serious. However, the stray current and rail potential solutions are difficult to verify in actual metro system. In recent years, the corresponding simulation systems have been extensively studied by researchers around the world. But the existing simulation systems lack the consideration of the train operation conditions and grounding schemes. Therefore, the applications of the simulation systems are limited. For these reasons, a novel bidirectional variable resistance module is firstly proposed to simulate the train movement under different operation conditions. Then three new dynamic simulation systems are further proposed in combination with the grounding schemes of the traction substation. The application scenarios, evolution laws, parameter selection and control strategies are analyzed in detail. The simulation and experimental results show that the above mentioned simulation systems can be employed not only to analyze the effects of stray current and rail potential, but also to hardware evaluations. It shows good application prospect in urban rail transit study.
Yang Xiaofeng,XueHao,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.
[1] Paul D.DC traction power system grounding[J]. IEEE Transactions on Industry Applications, 2002, 38(3): 818-824. [2] 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. [3] Lee C H, Lu C J.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. [4] Tzeng Y S, Lee C H.Analysis of rail potential and stray currents in a direct-current transit system[J]. IEEE Transactions on Power Delivery, 2010, 25(3): 1516-1525. [5] Dolara A, Foiadelli F, Leva S.Stray current effects mitigation in subway tunnels[J]. IEEE Transactions on Power Delivery, 2012, 27(4): 2304-2311. [6] 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. [7] Zaboli A, Vahidi B, Yousefi S, et al.Evaluation and control of stray current in DC-electrified railway systems[J]. IEEE Transactions on Vehicular Technology, 2017, 66(2): 974-980. [8] Charalambous C A, Aylott P, Buxton D.Stray current calculation and monitoring in dc mass-transit systems: interpreting calculations for real-life conditions and determining appropriate safety margins[J]. IEEE Vehicular Technology Magazine, 2016, 11(2): 24-31. [9] Charalambous C A, Aylott P.Dynamic stray current evaluations on cut-and-cover sections of DC metro systems[J]. IEEE Transactions on Vehicular Technology, 2014, 63(8): 3530-3538. [10] Charalambous C A.Comprehensive modeling to allow informed calculation of DC traction systems’stray current levels[J]. IEEE Transactions on Vehicular Technology, 2017, 66(11): 9667-9677. [11] Charalambous C A, Cotton I, Aylott P.A simulation tool to predict the impact of soil topologies on coupling between a light rail system and buried third-party infrastructure[J]. IEEE Transactions on Vehicular Technology, 2008, 57(3): 1404-1416. [12] 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. [13] Ibrahem A, Elrayyah A, Sozer Y, et al.DC railway system emulator for stray current and touch voltage prediction[J]. IEEE Transactions on Industry Applications, 2017, 53(1): 439-446. [14] 郑琼林, 杨晓峰, 游小杰. 城市轨道交通直流自耦变压器牵引供电系统[J]. 都市快轨交通, 2016, 29(3): 91-97. Zheng Trillion Q, Yang Xiaofeng, You Xiaojie.DC auto-transformer based traction power supply system for urban rail transit[J]. Urban Rapid Rail Transit, 2016, 29(3): 91-97. [15] Wang Miao, Yang Xiaofeng, Wang Lulu, et al.Resonant switched capacitor converter based DC auto-transformer for urban rail transit[C]//IEEE Applied Power Electronics Conference and Exposition (APEC), San Antonio, TX, 2018: 1441-1446.
2019, Vol. 34 
