Modelling and Simulation of Stray Current in Urban Rail Transit—A Review

Abstract

With the rapid development of urban rail transit, the issue of stray current due to incomplete insulation between the rail and the earth is attracting increasing attention. Stray current seriously affects the safe operation of urban rail transit, pipelines and power grids, and pose challenges to the development of urban energy security. However, there are significant differences among the various methods for the analysis and verification of stray currents, and existing research works thus lack a mature theoretical framework. To address this, this paper presents an in-depth review on the study of stray current including the mechanism, technical standards, modelling, simulation and mitigation technologies. Firstly, the principle and standards of stray current are introduced from multiple perspectives (i.e. metro side, pipeline side and grid side). Then, the typical modelling and simulation of stray current are summarized and compared in detail. The representative stray current mitigation measures, together with the stray current hardware simulation technologies, are also discussed. In conclusion, this paper provides a comprehensive overview of key technologies involved in the modelling and simulation of stray current, and highlights the valuable research direction in stray current mitigation.

Keywords

Urban rail transit / DC traction power supply / Stray current / Modelling and simulation

References

[1] Chen J, Liu J, Du B, Peng Q, Yin Y. Resilience assessment of an urban rail transit network under short-term operational disturbances. IEEE Trans Intell Transp Syst, 2022, 23: 24841-24853

[2] Chen Y, Tian Z, Roberts C, Hillmansen S, Chen M. Reliability and life evaluation of a DC traction power supply system considering load characteristics. IEEE Trans Transport Electrific, 2021, 7: 958-968

[3] Xu S, Li W, Wang Y. Effects of vehicle running mode on rail potential and stray current in DC mass transit systems. IEEE Trans Veh Technol, 2013, 62: 3569-3580

[4] Ogunsola A, Sandrolini L, Mariscotti A. Evaluation of stray current from a DC-electrified railway with integrated electric–electromechanical modelling and traffic simulation. IEEE Trans Ind Appl, 2015, 51: 5431-5441

[5] Wang A, Lin S, Hu Z, Li J, Wang F, Wu G, He Z. Evaluation model of DC current distribution in AC power systems caused by stray current of DC metro systems. IEEE Trans Power Del, 2021, 36: 114-123

[6] Ogunsola A, Mariscotti A, Sandrolini L. Estimation of stray current from a DC-electrified railway and impressed potential on a buried pipe. IEEE Trans Power Del, 2012, 27: 2238-2246

[7] Cotton I, Charalambous C, Aylott P, Ernst P. Stray current control in DC mass transit systems. IEEE Trans Veh Technol, 2005, 54: 722-730

[8] Ni Y, Zeng X, Yu K, Leng Y, Peng P (2018) Research on modelling method of transformer DC bias caused by metro stray current. In: Proceedings of 2018 international conference on power system technology, Guangzhou, China

[9] Buticchi G, Lorenzani E. Detection method of the DC bias in distribution power transformers. IEEE Trans Ind Electron, 2013, 60: 3539-3549

[10] Wang A, Lin S, He Z, Zhang J, Wu G. Probabilistic evaluation method of transformer neutral direct current distribution in urban power grid caused by DC metro stray current. IEEE Trans Power Del, 2023, 38: 541-552

[11] Tang Z, Li G, Xiao S, Deng X, Ruan L, Ge Z, Li M. Research on the influence of urban subway on neutral current of high-voltage substations along the line under complex environment. IEEE Access, 2023, 11: 21912-21920

[12] Wu G, Gong J, Wang Q, Zheng R, Wang G, Liu Y (2022) Analysis of the influence of DC magnetic bias induced by rail transit stray current on harmonic characteristics of transformer neutral current. In: Proceedings of 2022 IEEE/IAS industrial and commercial power system Asia, Shanghai, China

[13] Memon SA, Fromme P. Stray current corrosion and mitigation: a synopsis of the technical methods used in DC transit systems. IEEE Electrific Mag, 2014, 2: 22-31

[14] Paul D. DC stray current in rail transit systems and cathodic protection. IEEE Ind Appl Mag, 2016, 22: 8-13

[15] Pires CL. What the IEC tells us about stray currents: guidance for a practical approach. IEEE Electrific Mag, 2016, 4: 23-29

[16] Charalambous CA, 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. IEEE Veh Technol Mag, 2016, 11: 24-31

[17] Mariscotti A. Stray current protection and monitoring systems: characteristic quantities, assessment of performance and verification. Sensors, 2020, 20: 6610

[18] Wang C, Li W, Wang Y, Xu S, Fan M. Stray current distributing model in the subway system: a review and outlook. Int J Electrochem Sci, 2018, 13: 1700-1727

[19] IEC 62128-2: 2013. Railway applications—fixed installations—electrical safety, earthing and the return circuit—part 2: provisions against the effects of stray currents caused by D.C. traction systems. Available online: https://webstore.iec.ch/publication/6497

[20] EN 50122-2: 2022. Railway applications—fixed installations—electrical safety, earthing and the return circuit: part 2: provisions against the effects of stray currents caused by DC traction systems. Available online: https://standards.iteh.ai/catalog/standards/clc/877c9dd0-f6c3-438b-aa59-6d9121e4a907/en-50122-2-2022

[21] CJJ/T 49-2020. Technical standard for stray current corrosion protection in metro. Available online: https://www.chinesestandard.net/PDF/English.aspx/CJJT49-2020

[22] GB 50157-2013. Code for design of metro. Available online: https://www.chinesestandard.net/PDF/English.aspx/GB50157-2013

[23] ISO 21857: 2021. Petroleum, petrochemical and natural gas industries - Prevention of corrosion on pipeline systems influenced by stray currents. Available online: https://www.iso.org/standard/72085.html

[24] EN 50162: 2004. Protection against corrosion by stray current from direct current systems. Available online: https://standards.iteh.ai/catalog/standards/clc/a748ecbd-577a-43e3-8bc2-2b198c97123f/en-50162-2004

[25] GB 50991-2014. Technical standard for DC interference mitigation of buried steel pipeline. Available online: https://www.chinesestandard.net/PDF/English.aspx/GB50991-2014

[26] GB/T 19285-2014. Inspection of corrosion protection for buried steel pipelines. Available online: https://www.chinesestandard.net/Related.aspx/GBT19285-2014

[27] IEC/TS 60076-23: 2018. Power transformers—part 23: DC magnetic bias suppression devices. Available online: https://webstore.iec.ch/publication/31897

[28] IEEE C57.163-2015. IEEE guide for establishing power transformer capability while under geomagnetic disturbances. Available online: https://standards.ieee.org/ieee/C57.163/5893

[29] DL/T 1786-2017. Technical guideline for the synchronous monitoring of DC bias current distribution. Available online: https://www.chinesestandard.net/Related.aspx/DLT1786-2017

[30] DL/T 1957-2018. Guide for risk assessment and active defense of DC bias of power grids. Available online: https://www.chinesestandard.net/China/Chinese.aspx/DLT1957-2018

[31] Du G, Wang J, Jiang X, Zhang D, Yang L, Hu Y. Evaluation of rail potential and stray current with dynamic traction networks in multitrain subway systems. IEEE Trans Transport Electrif, 2020, 6: 784-796

[32] Cai Z, Zhang X, Cheng H. Evaluation of DC-subway stray current corrosion with integrated multi-physical modelling and electrochemical analysis. IEEE Access, 2019, 7: 168404-168411

[33] Zaboli A, Vahidi B, Yousefi S, Hosseini-Biyouki MM. Evaluation and control of stray current in DC-electrified railway systems. IEEE Trans Veh Technol, 2017, 66: 974-980

[34] Charalambous CA, Cotton I, Aylott P. Modelling for preliminary stray current design assessments: the effect of crosstrack regeneration supply. IEEE Trans Power Del, 2013, 28: 1899-1908

[35] Zhang J, Liu W, Tian Z, Qi H, Zeng J, Yang Y. Urban rail substation parameter optimization by energy audit and modified salp swarm algorithm. IEEE Trans Power Del, 2022, 37: 4968-4978

[36] Vranesic K, Bhagat S, Mariscotti A, Vail R. Measures and prescriptions to reduce stray current in the design of new track corridors. Energies, 2023, 16: 6252

[37] Liu H, Liu W, Wei J, Liu A, Dong Z. Effect of stray current on corrosion behavior of Mg alloy sacrificial anode in buried pipeline. Eng Fail Anal, 2023, 143: 106852

[38] Amir M, Deshmukh RG, Khalid HM, Said Z, Raza A, Muyeen SM, Nizami AS, Elavarasan RM, Saidur R, Sopian K. Energy storage technologies: an integrated survey of developments, global economical/environmental effects, optimal scheduling model, and sustainable adaption policies. J Energy Storage, 2023, 72: 108694

[39] Khalid HM, Flitti F, Muyeen SM, Elmoursi MS, Sweidan TO, Yu X. Parameter estimation of vehicle batteries in V2G systems: an exogenous function-based approach. IEEE Trans Ind Electron, 2022, 69: 9535-9546

[40] Vranesic K, Lakusic S, Serdar M. Influence of stray current on fastening system components in urban railway tracks. Appl Sci, 2023, 13: 5757

[41] Tang K. Stray current induced corrosion of steel fibre reinforced concrete. Cem Concr Res, 2017, 100: 445-456

[42] Alamuti MM, Nouri H, Jamali S. Effects of earthing systems on stray current for corrosion and safety behaviour in practical metro systems. IET Electr Syst Transp, 2011, 1(2): 69-79

[43] Memon SA, Fromme P. Stray current corrosion mitigation, testing and maintenance in dc transit system. Int J Transp Dev Integr, 2017, 1(3): 511-519

[44] Tzeng Y, Lee C. Analysis of rail potential and stray currents in a direct-current transit system. IEEE Trans Power Del, 2010, 25: 1516-1525

[45] Mariscotti A. Impact of rail impedance intrinsic variability on railway system operation, EMC and safety. Int J Electr Comput Eng, 2021, 11(1): 101-110.

[46] Bhagat S, Yang X, Wang M, Mariscotti A. Review and evaluation of stray current mitigation for urban rail transit. Trans China Electrotech Soc, 2021, 36(23): 4851-4863.

[47] Wang C, Qin G. Corrosion of underground infrastructures under metro-induced stray current: a review. Corros Commun, 2024

[48] Liu W, Li T, Zheng J, Pan W, Yin Y. Evaluation of the effect of stray current collection system in DC-electrified railway system. IEEE Trans Veh Technol, 2021, 70: 6542-6553

[49] Rahman FAA, Kadir MZAA, Osman M, Amirulddin UAU. Review of the AC overhead wires, the DC third rail and the DC fourth rail transit lines: issues and challenges. IEEE Access, 2020, 8: 213277-213295

[50] Gu J, Yang X, Zheng TQ, Shang Z, Zhao Z, Guo W. Negative resistance converter traction power system for reducing rail potential and stray current in the urban rail transit. IEEE Trans Transport Electrif, 2021, 7: 225-239

[51] Wang M, Yang X, Zheng T, Ni M. DC Autotransformer-based traction power supply for urban transit rail potential and stray current mitigation. IEEE Trans Transport Electrif, 2020, 6(2): 762-773

[52] Gu J, Yang X, Zheng T, Xia X, Chen M. Rail potential and stray current mitigation for the urban rail transit with multiple trains under multiple conditions. IEEE Trans Transport Electrif, 2022, 8(2): 1684-1694

[53] Chen M, Yang X, Zheng T Improved control strategy of zero-resistance converter system for rail potential and stray current mitigation. Int J Rail Transp, 2023, 11(2): 248-266

[54] Ibrahem A, Elrayyah A, Sozer Y, Abreu-Garcia JAD. DC railway system emulator for stray current and touch voltage prediction. IEEE Trans Ind Appl, 2017, 53: 439-446

[55] Yang X, Xue H, Wang H, Zheng TQ (2018) Stray current and rail potential simulation system for urban rail transit. In: Proceedings of 2018 IEEE international power electronics and application conference and exposition, Shenzhen, China

[56] Shao H, Yang X, He Y, Zheng TQ (2023) Stray current and rail potential dynamic emulator for urban rail transit system. In: Proceedings of IEEE transportation electrification conference and exposition, Detroit, USA

[57] Xue H, Yang X, Zhou Y, Zheng TQ (2018) Multi-interval DC traction system simulator for stray current and rail potential distribution. In: Proceedings of 2018 IEEE energy conversion congress and exposition, Portland, USA

[58] Wang M, Yang X, Li S, Ni M, Wang H, Zheng TQ. Dynamic performance analysis, optimization and verification of DC auto-transformer system with rail potential and stray current emulator. IEEE Trans Transport.Electrif, 2022, 8: 480-491

[59] Zhao L, Li J, Liu M (2016) Simulation and analysis of metro stray current based on multi-locomotives condition. In: Proceedings of 2016 35th Chinese control conference, Chengdu, China

[60] Du G, Zhang D, Li G, Wang C, Liu J. Evaluation of rail potential based on power distribution in DC traction power systems. Energies, 2016, 9: 1-20

[61] Lin S, Zhou Q, Lin X, Liu M, Wang A. Infinitesimal method based calculation of metro stray current in multiple power supply sections. IEEE Access, 2020, 8: 96581-96591

Funding

Beijing Natural Science Foundation(3222054)

the Fundamental Research Funds for the Central Universities(2019JBM058)