Modeling and analysis of dynamic stray current and ground potential gradient under partial insulation damage of a metro track

被引：0
|
作者：
Xia N. [1 ]
Tang W. [1 ]
Li H. [2 ]
Huang C. [3 ]
Xu X. [1 ]
Li F. [1 ]
Ma H. [1 ]
机构：
[1] Shanghai University of Electric Power, Shanghai
[2] Nari Technology Co., Ltd., Power System Stability Control Technology Branch, Nanjing
[3] China Ship Development and Design Center, Wuhan
来源：
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2023年 / 51卷 / 04期
基金：
中国国家自然科学基金;
关键词：
DC interference; dynamic ground potential gradient; partial insulation damage; stray current;
D O I：
10.19783/j.cnki.pspc.220504
中图分类号：
学科分类号：
摘要：
Damage to the metro rail ground insulation will lead to the reduction of the transition resistance, resulting in the surge of leakage current and the rise of the ground potential gradient. First, considering the continuous distribution of the transition resistance along the track under the local insulation damage of the track, a distribution model of the rail to ground transition resistance is proposed and established. Then, the train fast traction strategy is introduced, and the dynamic distribution model of stray ground current and the gradient model of ground potential for the complete traction cycle are constructed. Based on the distributed parameter theory, the continuous distributed current is equivalent to several discrete distributed point current sources. Finally, a complex image method is used to solve the Green's function to calculate and analyze the dynamic stray current distribution and dynamic ground potential gradient distribution of the whole line. The accuracy and superiority of the model are verified by CDEGS software comparison. The results show that keeping high insulation performance in acceleration and deceleration areas is the key to reduce the influence of DC traction power supply system on nearby ground potential gradient and DC interference in a soil environment. © 2023 Power System Protection and Control Press. All rights reserved.
引用
收藏
页码：53 / 61
页数：8
相关论文
共 25 条
  • [1] DOLARA A, FOIADELLI F, LEVA S., Stray current effects mitigation in subway tunnels, IEEE Transactions on Power Delivery, 27, 4, pp. 2304-2311, (2012)
  • [2] WEI Guang, Study on the design of a main grounding grid in a traction substation, Power System Protection and Control, 48, 9, pp. 181-187, (2020)
  • [3] CHEN R, YANG Y, JIN T., A hierarchical coordinated control strategy based on multi-port energy router of urban rail transit, Protection and Control of Modern Power Systems, 7, 2, pp. 201-212, (2022)
  • [4] Murty V V S N, KUMAR A., Multi-objective energy management in microgrids with hybrid energy sources and battery energy storage systems, Protection and Control of Modern Power Systems, 5, 1, pp. 1-20, (2020)
  • [5] WANG Jing, XIA Jiafu, LIU Xiaohui, Et al., Research on mechanical condition monitoring and fault diagnosis for DC circuit breaker in traction substation, Power System Protection and Control, 48, 1, pp. 33-40, (2020)
  • [6] MA Xiaohua, Interference detection and protection of subway stray current interference on Shanghai HongQiao aeri-oil pipeline, Corrosion & Protection, 37, 5, pp. 364-367, (2016)
  • [7] MEMON S, FROMME P., Stray current corrosion and mitigation: a synopsis of the technical methods used in DC transit systems, Electrification Magazine IEEE, 2, 3, pp. 22-31, (2014)
  • [8] LEE C H, LU C J., Assessment of grounding schemes on rail potential and stray currents in a DC transit system, IEEE Transactions on Power Delivery, 21, 4, pp. 1941-1947, (2006)
  • [9] CHEN Zhiguang, QIN Chaokui, TANG Jixu, Analysis and calculation of rail transit dynamic stray current, Urban Rail Transit Research, 17, 3, pp. 24-29, (2014)
  • [10] XU Shaoyi, LI Wei, WANG Yuqiao, Effects of vehicle running mode on rail potential and stray current in DC mass transit systems, IEEE Transactions on Vehicular Technology, 62, 8, pp. 3569-3580, (2013)
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