The Impact of Transmission Line Modeling on Lightning Overvoltage

Jaimis Sajid Leon Colqui (), Rodolfo Antônio Ribeiro de Moura, Marco Aurélio De Oliveira Schroeder, José Pissolato Filho and Sérgio Kurokawa
Additional contact information
Jaimis Sajid Leon Colqui: School of Electrical and Computer Engineering, State University of Campinas—UNICAMP, Campinas 13083-852, Brazil
Rodolfo Antônio Ribeiro de Moura: Electrical Engineering Department, Federal University of São João del-Rei—UFSJ, São João del-Rei 36307-352, Brazil
Marco Aurélio De Oliveira Schroeder: Electrical Engineering Department, Federal University of São João del-Rei—UFSJ, São João del-Rei 36307-352, Brazil
José Pissolato Filho: School of Electrical and Computer Engineering, State University of Campinas—UNICAMP, Campinas 13083-852, Brazil
Sérgio Kurokawa: Department of Electrical Engineering, São Paulo State University—UNESP, Ilha Solteira 15385-000, Brazil

Energies, 2023, vol. 16, issue 3, 1-19

Abstract: In most of the work that investigates the backflashover phenomenon due to direct lightning strikes, using EMT-type simulators, transmission lines are represented by the J. Marti model and the ground effect is computed employing J. R. Carson’s formulations. Thus, the ground displacement current is neglected, the line voltage definition corresponds to the wire potential formulation, and soil resistivity is considered frequency-independent. These considerations can lead to erroneous measurements of the occurrences of the backflashover phenomenon in the insulator strings of transmission line. In this sense, this paper presents a systematic sensitivity analysis study of lightning overvoltage in insulator strings considering more physically consistent models of the transmission line, which consider the displacement current, ground admittance correction, rigorous voltage definition, and frequency-dependent soil parameters. According to the results, for the case study, transmission line parameters modeling can present a maximum percentual difference of around 71.54%, considering the frequency range of first strokes. This difference leads to a percent difference of around 5.25% in the maximum overvoltage across the insulator strings. These differences confirm that the occurrence or not of backflashover in the insulator strings, including the disruption time, are sensitive to the line model considered.

Keywords: transmission line modeling; lightning overvoltages; frequency-dependent soil parameters; EMT-type simulators (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/16/3/1343/pdf (application/pdf)
https://www.mdpi.com/1996-1073/16/3/1343/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:16:y:2023:i:3:p:1343-:d:1048187

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().