Design an Automatic Switching of Lightning Arrester to Control Both Sides of Transformer

International Journal of Electronics and Communication Engineering

© 2020 by SSRG - IJECE Journal

Volume 7 Issue 3

Year of Publication : 2020

Authors : Sospeter Gabriel, Exaud Saul Tweve

10.14445/23488549/IJECE-V7I3P104

How to Cite?

Sospeter Gabriel, Exaud Saul Tweve, "Design an Automatic Switching of Lightning Arrester to Control Both Sides of Transformer," SSRG International Journal of Electronics and Communication Engineering, vol. 7,  no. 3, pp. 22-28, 2020. Crossref, https://doi.org/10.14445/23488549/IJECE-V7I3P104

Abstract:

This study focuses on protecting electrical distribution line equipment against lightning strikes in the Mbeya region. The distribution line equipment of the Mbeya region has been suffered from lightning strikes. This equipment includes distribution transformers, reactors, switchgear, and line insulators. The study aimed to review the existing lightning protection system in the Mbeya region and suggest possible ways of improving them. The study was conducted in five major areas of the Mbeya Region: Mbeya town, Iyunga, Igurusi, Songwe, and Chimala. Data were collected through site visitation as well as field measurements. It was revealed that in the Mbeya region, the percentage of the transformer without lightning arrestors ranges from 12.5% to 25%. About 66.7% of distribution lines of 33kV have got no overhead ground wire for protection against lightning. Not only that but also earthing resistance at distribution transformers was unfulfilling the standards for protection against lightning strikes. The study found that almost all distribution transformers in the Mbeya region are protected by surge arrestors on the primary side, leaving the secondary side unprotected. It is recommended that the transformer must be protected from lightning strikes and traveling waves by surge arrestors on both the primary and secondary sides. The primary distribution lines should be protected with overhead ground wire since they are most likely to be stroked by direct lightning strikes. The grounding system should be improved to meet the recommended standards for the protection of the substation.

Keywords:

Distribution transformer, surge arresters, and lightning strikes

References:

[1] BEATY, H. W. “Standard Handbook for Electrical Engineers.” New York: McGraw-Hill Professional,2006. ISBN 978-0071762328.
[2] WHITAKER, J. C. 2006. AC power systems handbook, CRC Press.
[3] GUMLEY, J. R. & KOSSMANN, C. J. 2001. “Transient overvoltage and lightning protection of power connected equipment.” Google Patents.
[4] GREENWOOD, “A. Electrical Transients In Power Systems.” New York: John Wiley & Sons,1991. ISBN 978-0471620587.
[5] Anirudh Kumar, Ashish Raj, Abhishek Kumar, Sikandar Prasad &BalwantKumar, “Method for monitoring Of Distribution Transformer,” Undergraduate Academic Research Journal (UARJ), ISSN: 2278 – 1129, Volume-1, Issue-3, 8, 2012.
[6] Ali Kazemi& Casper Labuschagne, “ProtectingPower Transformers From Common AdverseConditions,” paper presented at the Ga-Tech and the Western Protective Relay Conferences, New Berlin” in 2005.
[7] BURKE, J. J. “Power Distribution Engineering Fundamentals and applications.” New York: CRC Press, 1994. ISBN 978-0824792374.
[8] MARTINEZ, J. A. and D. W. DURBAK. “Parameter determination for modeling systems Transients-part Vs. Surge arrester”. Transactions on Power Delivery. 2005, vol. 20, is s. 3, pp.2073-2078. ISSN 0885- 8977. DOI:10.1109/TPWRD.2005.848771
[9] FERNANDEZ, F. & DIAZ, R. “Metal oxide surge arrester model for fast transient simulations.” The Int. Conf. on Power System Transients IPAT, 2001. Citeseer.
[10] TAN, Y., LIANG, Z., Shi, Z., ZHU, J. & Guo, X. 2014. “Numerical simulation of the effect of lower positive charge region in thunderstorms on different types of lightning.” Science ChinaEarth Sciences, 57, 2125-2134.