Smart Touch Voltage Limitation

Year 2021, , 547 - 553, 15.04.2021

Mahmut Turhan

https://doi.org/10.16984/saufenbilder.812423

Abstract

In modern railway electric infrastructure design there are two major concerns that should be considered as touch voltage and stray current. The first problem is touch and step voltage which endangers human safety even to deathly situations. Second problem is stray current which leads to corrosion of metallic infrastructure. Since human safety has higher priority early on railway systems has grounded the rail voltage to the earth but this caused stray current problem. Thus these two problems should be handled together. In this paper we present a touch voltage control and stray current monitoring solution to handle both problems. Our solution presented here uses thyristor based grounding to limit touch voltage and monitor and report stray current

Keywords

touch voltage, stray current, railway electric, thyristor

References

• Referans1 M.Niasati, A.Gholami, “Overview of Stray Current Control in DC Railway Systems” April 2008
• Referans2 S.Acıkbas, M.T.Soylemez, ”Catenary System Paralleling and its Effect on Power Consumption and Regenerated Energy Recuperation”, 4th International Conference on Electrical and Electronics Engineering (ELECO 2005), Bursa, Turkey, pp 17-21, 2005.
• Referans3 IEEE Std 81-1983, IEEE Guide for Measuring Earth Resistivity, Ground Impedance, and Earth Surface Potentials of a Ground System.
• Referans4 K.S. Bahra, R.B. Catlow. “Control of Stray Currents for D.C. Traction Power Systems”, Electrical Railways in a United Europe, pp. 136-142, 1995.
• Referans5 D. Paul. “DC Traction Power System Grounding”, IEEE Transactions on Industry Applications, vol. 38, no 3, 2002
• Referans6 IEEE-SA Standard Boards 2000, IEEE Guide for Safety in AC Substation Grounding, IEEE Std 80-2000, IEEE Incorporate
• Referans7 Sakis Meliopoulos, A. P., Patel Shashi, Cokkinides, G. J., “A New Method and Instrument for Touch and Step Voltage Measurements”, IEEE Transactions on Power Delivery, vol. 9, No. 4, October 1994, pp. 1850-1860
• Referans8 IEEE Incorporate. . Romulad K., Mukhedar D., “Field Measurement of Touc h and Step Voltages”, IEEE Transaction on Power Apparatus and System Voltages,vol.PAS-103, No.11, November 1984, pp.3286-3294
• Referans9 Spuntunpong K., Chartratana S., “Design of Groundin g System for GIS indoor Substation”, IEEE Region 10 th Conference, volume C ,21-24 Nov.2004, pp.413-416.
• Referans10 Ghoneim Sherif, Hirsch Holger, Elmorshedy Ahdab, Amer Rabah, “Optimum Grounding Grid Design by using an Evolut ionary Algorithm”, IEEE Power Enginerering Society General Meeting 2007, 24-28 June 2007, pp1-7.
• Referans11 C.-H. Lee, H.-M. Wang. “Effects of Grounding Schemes on Rail Potential and Stray Currents in Taipei Rail Transit Systems”, IEE Proc.-Electr. Power Appl., vol. 148, No 2, pp. 148-154, 2001.
• Referans12 Chow, Y.L., Salama, M.M.A., Djogo, G., “Thevenin Source Resistances of the Touch,Transferred and Step Voltages of a Grounding System” IEE Proceedings Gener. Transin. D istrib., vol. 146, No. 2, March 1999, pp. 107-114
• Referans13 A. Ogunsola and A. Mariscotti, Electromagnetic Compatibility in Railways: Analysis and Management. Berlin, Germany: Springer-Verlag, 2013, p. 23.
• Referans14 Railway Applications. Fixed Installations. Electrical Safety, Earthing and the Return Circuit. Protective Provisions Against Electric Shock, BS EN 50122-1:2011+A4:2017, 2011.
• Referans15 Railway Applications. Fixed Installations. Electrical Safety, Earthing and the Return Circuit. Provisions Against the Effects of Stray Currents Caused by D.C. Traction Systems, BS EN 50122-2:2010.
• Referans16 Railway Applications. Fixed Installations. Electrical Safety, Earthing and the Return Circuit. Mutual Interaction of A.C. and D.C. Traction Systems, BS EN 50122-3:2010.
• Referans17 Cotton I, Charalambous C, Aylott P, Ernst P. Stray current control in DC mass transit systems. IEEE Trans Veh Technol 2005; 54: 722– 730.
• Referans18 Z. Chen, D.Koleva , K.Breugel, “A review on straycurrent-induced steel corrosion in infrastructure”, https://www.researchgate.net/publication/320969257
• Referans19 M.T. Söylemez, S. Açıkbaş. A.Kaypmaz, Controlling Rail Potential of DC Supplied Rail Traction Systems, Turk J Elec Engin, VOL.14, NO.3 2006