Effect of the Impulse Phenomenon on the Differential Protection of the Power Transformer

International Journal of Electrical and Electronics Engineering
© 2018 by SSRG - IJEEE Journal
Volume 5 Issue 11
Year of Publication : 2018
Authors : Montaser A.M. Qasem and Naje Mohammed Nasr
How to Cite?

Montaser A.M. Qasem and Naje Mohammed Nasr, "Effect of the Impulse Phenomenon on the Differential Protection of the Power Transformer," SSRG International Journal of Electrical and Electronics Engineering, vol. 5,  no. 11, pp. 12-18, 2018. Crossref, https://doi.org/10.14445/23488379/IJEEE-V5I11P103


Power transformer plays a vital role in our power system. Everybody is aware of the scenario consumers face once a power transformer goes out of order, particularly in our country. Owing to its demand, power transformer needs most up-to-date protection scheme. Overcurrent relay, gas relay and differential relay are the three important relay for power transformer protection. Faults are basically two types – through fault and external fault. There are a number of papers by different researchers in the country advocating different philosophies to design a numerical relay or software relay which can discriminate between a inrush and fault. This paper discusses the different types of inrush phenomenon in power transformer, except CT saturation, highlighting some of the methods to reduce it and detect it and simultaneously ventures to incorporate such a power transformer into the power system network and study fault pattern by the aid of world’s most popular environment, that is MATLAB- SIMULINK and also discusses some of its advantages.


 magnetizing inrush, numerical relay, power transformer protection, matlab-simulink, power system modelling.


[1] Karsai K, Kerenyi D, Kiss L, 1987, “Large Power Transformers”, Elsevier, New York, USA. 
[2] Kasztenny B, Kezunovic M, 1998, “Improved Power Transformer Protection using Numerical Relays”, IEEE Computer Applications in Power, 11/4, 39-45. 
[3] Giuliante T, Clough G, “Advances in the Design of Differential Protection for Power Transformers”, 1995, Texas A&M University Conference for Protective Relay Engineers, College Station, Texas, USA. 
[4] Inagaki K, Higaki M, Matsui Y, Kurita K, Suzuki M, Yoshida K, Maeda T, “Digital Protection Method for Power Transformers Based on an Equivalent Circuit Composed of Inverse Inductance”, 1988, IEEE Transactions on Power Delivery, 3/4, 1501-1508. 
[5] Sidu T S, Sachdev M S, Wood H C, “Detecting Transformer Winding Faults using Non-Linear Models of Transformers”, 1989, 4th International Conference Developments in Power System Protection, IEE Publication No.302, 70-74. 
[6] Yabe K, “Power Differential Method for Discrimination between Fault and Magnetizing Inrush Current in Transformers”, 1997, IEEE Transactions on Power Delivery, 12/3, 1109-1118. 
[7] Thorp J S, Phadke AG, “A New Computer Based Flux Restrained Current Differential Relay for Power Transformer Protection”, 1983, IEEE Transactions on Power Apparatus and Systems, PAS-102/11, 3624-3629. 
[8] J.H.Brunke, J.K. Fröhlich, "Elimination of Transformer Inrush Currents by Controlled Switching, "IEEE Transactions On Power Delivery, vol. 16, no. 2, April 2001. 
[9] A.M.Guzman and S. Zocholl, “Performannce analysis of traditional and improved transformer differential protective relays” 
[10] A.Guzman and S.Zocholl “ A current based solution for transformer differential protection – part 1:Problem Statement”,” IEEE Trans. Power Delivery, volume 16 no.4 pp. 485491, 2001. 
[11] B.Kasztenny and M.Kezunovic, “Improved Power Transformer Protection Using Numerical Relays”, IEEE Computer Applications in Power, Vol.11, No.4, October 1998, pp.39-45. 
[12] K.Karsai, D.Kerenyi and L. Kiss, “Large power transformers”, Elsevier, New York, 1987. 
[13] W.A.Elmore “Protective relaying, Theory and Applications,” Marcel Dekker, New York, 1994. 
[14] Anil Kumar Pathak, Dr. A. K. Jhala, Pramod Kumar Rathore, Transformer Inrush Current Mitigation for Series Voltage Sag Compensator, International Journal of Engineering Trends and Technology (IJETT) – Volume 48 Number 4 June 2017.