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Prof. Abdel-Salam Hafez Abdel-Salam Hamza :: Publications:

Title:
Analysis and Mitigation Techniques of Switching Overvoltages for A 500 kV Transmission Line
Authors: Ahmed S. Shafy , Ahmed M.Emam, Samy M. Ghania , A. H. Hamza
Year: 2021
Keywords: Not Available
Journal: International Electrical Engineering Journal (IEEJ)
Volume: Vol. 7 (2016) No.3,
Issue: ISSN 2078-2365
Pages: pp. 2196-2203
Publisher: Switching Overvoltages, Energization, Transmission Line, Mitigation Techniques, Controlled Switching.
Local/International: International
Paper Link: Not Available
Full paper Not Available
Supplementary materials Not Available
Abstract:

When an overhead Transmission line is energized, transients overvoltages are generated in the electrical networks including the line and the supply network that can be dangerous and may lead to insulation failure. Therefore, it would be of great importance to study these overvoltages and the different factors affecting on it and the different methods and techniques used to reduce these overvoltages and its undesirable effects. In this paper, the overvoltages due to energization of a typical Egyptian 500kV single line from A_Mousa to Taba are investigated. The effects of the various parameters on the switching overvoltages are analyzed. The power system under study and its components are simulated using ATP/EMTP software package. The statistical distributions of the switching overvoltages for the different cases under study are derived. The techniques of mitigation for the switching overvoltages by shunt reactors, pre-insertion resistor, surge arrestors and point on wave controlled switching are demonstrated.

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