dc.contributor | Universidade Estadual Paulista (UNESP) | |
dc.contributor | Universidade Estadual de Campinas (UNICAMP) | |
dc.date.accessioned | 2022-05-01T08:44:46Z | |
dc.date.accessioned | 2022-12-20T03:40:48Z | |
dc.date.available | 2022-05-01T08:44:46Z | |
dc.date.available | 2022-12-20T03:40:48Z | |
dc.date.created | 2022-05-01T08:44:46Z | |
dc.date.issued | 2021-09-01 | |
dc.identifier | Energies, v. 14, n. 17, 2021. | |
dc.identifier | 1996-1073 | |
dc.identifier | http://hdl.handle.net/11449/233457 | |
dc.identifier | 10.3390/en14175252 | |
dc.identifier | 2-s2.0-85113950043 | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/5413556 | |
dc.description.abstract | This paper evaluates the influence of frequency-dependent soil conductivity and permittiv-ity 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 Alípio 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 Ω·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. | |
dc.language | eng | |
dc.relation | Energies | |
dc.source | Scopus | |
dc.subject | Electromagnetic transient analysis | |
dc.subject | Ground-return admittance | |
dc.subject | Ground-return impedance | |
dc.subject | Lightning | |
dc.subject | Transmission lines | |
dc.title | Transient analysis of multiphase transmission lines located above frequency-dependent soils | |
dc.type | Artículos de revistas | |