| Texto completo | |
| Autor(es): |
Pascoalato, T. F. G.
;
de Araujo, A. R. J.
;
Kurokawa, S.
;
de Barros, M. T. Correia
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Electric Power Systems Research; v. 251, p. 8-pg., 2026-02-01. |
| Resumo | |
This is an application paper examining the impact of incorporating water content, porosity, stratification, and frequency-dependent soil parameters on lightning-induced overvoltages in transmission lines (TLs). The authors implemented the Universal Line Model (ULM) in ATP-EMTP, following a previously proposed procedure, and developed MATLAB code using Wise's formulation for ground-return parameters. This approach enables more realistic soil modeling through three models: frequency-dependent parameters (Al & iacute;pio-Visacro), wet and porous soils (Archie's law), and stratified soil (Xue's formulation). The study compares results obtained using ULM in ATP-EMTP with the software's built-in model, which relies on Carson's formulation, a more conservative method that neglects displacement currents and assumes constant soil conductivity. Overvoltages were analyzed in two parallel TLs, 50 meters apart, operating at 230 kV and 115 kV, with lightning striking the outer phase of the 230 kV line. The findings show significant differences between modeling approaches, particularly in induced overvoltages on non-struck phases. The results highlight the importance of using advanced soil models in transient analysis to enhance accuracy in estimating lightning overvoltages. Future ATP-EMTP versions should incorporate these models to improve simulation precision. (AU) | |
| Processo FAPESP: | 22/09182-3 - Modelagem de linhas de transmissão multifásicas considerando os parâmetros do solo dependentes da frequência: análise transitória via software ATP |
| Beneficiário: | Tainá Fernanda Garbelim Pascoalato |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Doutorado |
| Processo FAPESP: | 20/10141-4 - Influência das características eletromagnéticas do solo nas respostas transitórias que ocorrem em linhas de transmissão de energia elétrica |
| Beneficiário: | Tainá Fernanda Garbelim Pascoalato |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |