Switching overvoltage calculations and reduction, for 400 KV-line connecting Khoms and Gmmra substations

Authors

  • Abubkr Ali Elshekhi Department of Electrical and Computer Engineering, Al-Mergib University, Alkhoms, Libya
  • Ali Tamtum Department of Electrical and Computer Engineering, Al-Mergib University, Alkhoms, Libya.
  • Shukri El Dabar Department of Electrical and Computer Engineering, Al-Mergib University, Alkhoms, Libya.

DOI:

https://doi.org/10.59743/aujas.v1i2.1556

Keywords:

Transient overvoltage, Switching surgesy, Stabilit

Abstract

Transient overvoltage in power systems is one of the most important issues to be considered for system stability.  Switching surges is one of the most important reasons that cause  Transient  overvoltage.  This paper presents a full study  of  the  high-voltage  line  connecting  KHOMS  and  GMMRA  substations.  The study utilizes the Alternative Transient  Program  (ATP)  to  compute  the  transient overvoltage due to switching surges (line closing and re-closing); as well as presenting the  usage of surge arrester with pre-insertion resistor to reduce the upper limit of transient overvoltage.  The results present the positive effect of using surge arrester and resistor switching element to limit transient overvoltage and keep it at  certain  level;  as  well  as  damping  the  isolation  in  the  voltage  waveform.

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General Electric Company of Libya

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Published

2016-12-30

How to Cite

Elshekhi, A. A., Tamtum, A., & El Dabar, S. (2016). Switching overvoltage calculations and reduction, for 400 KV-line connecting Khoms and Gmmra substations . Journal of Alasmarya University, 1(2), 141–149. https://doi.org/10.59743/aujas.v1i2.1556