Avaliação de Energia Absorvida por Para-Raios de Linhas de Transmissão com Underbuilt Wire Devido a Descarga Atmosférica

Túlio O. S. Assunção; Jaimis S. L. Colqui; Rodolfo A. R. Moura; Marco Aurélio O. Schroeder; Fernando Aparecido de Assis; José Pissolato Filho

doi:10.20906/SBAI-SBSE-2023/3931

Túlio O. S. Assunção Electrical Engineering Department, Federal University of São João del-Rei, MG
Jaimis S. L. Colqui
Rodolfo A. R. Moura Electrical Engineering Department, Federal University of São João del-Rei, MG
Marco Aurélio O. Schroeder Electrical Engineering Department, Federal University of São João del-Rei, MG
Fernando Aparecido de Assis Electrical Engineering Department, Federal University of São João del-Rei, MG
José Pissolato Filho School of Electrical and Computer Engineering, State University of Campinas, SP

DOI: https://doi.org/10.20906/SBAI-SBSE-2023/3931

Keywords: Electromagnetic transients, Underbuilt Wire, Surge Arrester Energy, Transmission Line

Abstract

This paper studies and assesses the performance of a 230 kV transmission line when subjected to lightning strikes using the unconventional technique of Underbuilt Wire (UBW), of overvoltage reduction in the insulator strings. The results obtained in this study demonstrate that transmission lines with UBW significantly reduce the energy absorbed by surge arresters, especially for soils with high resistivity. With reductions of up to 70,83%, the energy absorbed by surge arresters of lines that have UBW has a better performance.