Evaluation of the Performance of Different Relays under Magnetizing Inrush Current.
Kandil, M., Ahmed, F., El-Tamally, H. (2020). Evaluation of the Performance of Different Relays under Magnetizing Inrush Current.. EKB Journal Management System, 5(1), 89-100. doi: 10.21608/bfemu.1980.182457
Mahmoud Saber Ahmed Kandil; F. I. Ahmed; H. H. El-Tamally. "Evaluation of the Performance of Different Relays under Magnetizing Inrush Current.". EKB Journal Management System, 5, 1, 2020, 89-100. doi: 10.21608/bfemu.1980.182457
Kandil, M., Ahmed, F., El-Tamally, H. (2020). 'Evaluation of the Performance of Different Relays under Magnetizing Inrush Current.', EKB Journal Management System, 5(1), pp. 89-100. doi: 10.21608/bfemu.1980.182457
Kandil, M., Ahmed, F., El-Tamally, H. Evaluation of the Performance of Different Relays under Magnetizing Inrush Current.. EKB Journal Management System, 2020; 5(1): 89-100. doi: 10.21608/bfemu.1980.182457

Evaluation of the Performance of Different Relays under Magnetizing Inrush Current.

MEJ- Mansoura Engineering Journal
Article 16, Volume 5, Issue 1, June 1980, Page 89-100  XML PDF (307.53 K)
Document Type: Research Studies
DOI: 10.21608/bfemu.1980.182457
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Authors
Mahmoud Saber Ahmed Kandil* 1; F. I. Ahmed2; H. H. El-Tamally3
1Assistant Professor, Electrical Engineering Department, Faculty of Engineering, Mansoura University, Mansoura, Egypt.
2Professor of Electrical Power & Machines Department, Faculty of Engineering, Cairo University, Egypt.
3Demonstrator, Electrical Engineering Department, Faculty of Engineering, Ilmenia University.
Abstract
Harmonic restraint differential relays are popular in practice for transformer protection. Under magnetic inrush current, these relays should not operate since the harmonic restraint discriminates between this current and short-circuit current according to the harmonic analysis of the two waves. This analysis is carried-out for different operating and design parameters of the protected transformer. The resulted data is used to evaluate some practical differential relays with harmonic restraint. A new idea for a restraining feature of differential relay is of introduced.
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