| Texto completo | |
| Autor(es): |
Pascoalato, Taina Fernanda Garbelim
;
de Araujo, Anderson Ricardo Justo
;
Kurokawa, Sergio
;
Pissolato Filho, Jose
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Electric Power Systems Research; v. 247, p. 12-pg., 2025-04-29. |
| Resumo | |
This paper investigates the frequency effect of soil electrical parameters on the sequence parameters (resistance, inductance, capacitance and mutual elements) of the symmetrical circuits in a double-circuit transmission line (TL). The analysis utilizes Nakagawa's approach to model the ground-return parameters (admittance and impedance). The study is conducted on a 110-kV double-circuit TL with a non-transposed configuration, located on soil with three distinct low-frequency resistivities: 100, 1,000, and 10,000 Q.m. Results are compared with those obtained by assuming soil modeled with frequency-independent electrical parameters, using Carson's approach where the ground-return admittance is neglected. The findings indicate that using frequency-dependent soil parameters based on Nakagawa's approach results in lower sequence parameters compared to the traditional Carson's approach. Furthermore, mutual couplings within one circuit and between both circuits are evaluated. The results demonstrate that the coupling between sequence circuits is much higher and is significantly influenced by low-frequency soil resistivity. The numerical results underscore the strong mutual coupling between sequence circuits in untransposed double-circuit overhead TLs, where Carson's approach overestimates the magnitude of these elements. (AU) | |
| Processo FAPESP: | 19/01396-1 - Representação de torres convencionais e elevadas de linhas de transmissão diretamente no domínio do tempo para análises de transitórios eletromagnéticos |
| Beneficiário: | Anderson Ricardo Justo de Araújo |
| Modalidade de apoio: | Bolsas no Brasil - Pós-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 |
| 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 |