| Texto completo | |
| Autor(es): |
Garbelim Pascoalato, Taina Fernanda
[1]
;
Justo de Araujo, Anderson Ricardo
[2]
;
Caballero, Pablo Torrez
[1]
;
Leon Colqui, Jaimis Sajid
[1]
;
Kurokawa, Sergio
[1]
Número total de Autores: 5
|
| Afiliação do(s) autor(es): | [1] Sao Paulo State Univ UNESP, Dept Elect Engn, BR-15385000 Ilha Solteira - Brazil
[2] State Univ Campinas UNICAMP, Sch Elect & Comp Engn, BR-13083872 Campinas - Brazil
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ENERGIES; v. 14, n. 17 SEP 2021. |
| Citações Web of Science: | 0 |
| Resumo | |
This paper evaluates the influence of frequency-dependent soil conductivity and permittivity in the transient responses of single- and double-circuit transmission lines including the ground wires subjected to lightning strikes. We use Nakagawa's approach to compute the ground-return impedance and admittance matrices where the frequency-dependent soil is modeled using Alipio and Visacro's model. We compare some elements of these matrices with those calculated by Carson's approach which assumes the frequency constant. Results show that a significant difference can be obtained in high resistive soils for these elements in impedance and admittance matrices. Then, we compute the transient responses for single- and double-circuit lines with ground wires located above soils of 500, 1000, 5000, and 10,000 omega center dot m considering the frequency constant and frequency-dependent parameters generated for two lightning strikes (subsequent stroke and Gaussian pulse). We demonstrate that the inclusion of frequency dependence of soil results in an expressive reduction of approximately 26.15% and 42.75% in the generated voltage peaks in single- and double-circuit lines located above a high-resistive soil. These results show the impact of the frequency-dependent soils that must be considered for a precise transient analysis in power systems. (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 |