Journal of Modeling in Engineering

Journal of Modeling in Engineering

Modeling and Evaluation of the Performance of Hybrid HV Lines Against Transient Lightning and Switching Surges

Document Type : Research Paper

Authors
1 Faculty of Electrical and Computer Engineering, Semnan University, Semnan, Iran
2 Department of Electrical and Computer Engineering, Semnan University, Semnan, Iran
Abstract
Due to economic and technical constraints, hybrid lines (OH line - cables) remain necessary in suburban and urban areas. A critical challenge in studying these hybrid lines is their performance under transient lightning and switching surges. These transient overvoltages risk a significant threat to the insulation of power grid equipment, with cables being particularly vulnerable. This article analyzes the critical parameters influencing the magnitude of transient overvoltages in hybrid lines and explores various methods for mitigating these surges. Utilizing EMTP-RV software for modeling and simulation, the article meticulously investigates the maximum stresses imposed on cable insulation by overvoltages. Additionally, it presents solutions and recommendations for reducing transient overvoltages to acceptable levels.
Keywords
Subjects

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Volume 24, Issue 85
July 2026
Pages 299-312

  • Receive Date 28 July 2024
  • Revise Date 25 May 2025
  • Accept Date 18 August 2025