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Transient Analysis of Multiphase Transmission Lines Located above Frequency-Dependent Soils

Author

Listed:
  • Tainá Fernanda Garbelim Pascoalato

    (Department of Electrical Engineering, São Paulo State University (UNESP), Ilha Solteira 15.385-000, Brazil)

  • Anderson Ricardo Justo de Araújo

    (School of Electrical and Computer Engineering, State University of Campinas (UNICAMP), Campinas 13.083-872, Brazil)

  • Pablo Torrez Caballero

    (Department of Electrical Engineering, São Paulo State University (UNESP), Ilha Solteira 15.385-000, Brazil)

  • Jaimis Sajid Leon Colqui

    (Department of Electrical Engineering, São Paulo State University (UNESP), Ilha Solteira 15.385-000, Brazil)

  • Sérgio Kurokawa

    (Department of Electrical Engineering, São Paulo State University (UNESP), Ilha Solteira 15.385-000, Brazil)

Abstract

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 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.

Suggested Citation

  • Tainá Fernanda Garbelim Pascoalato & Anderson Ricardo Justo de Araújo & Pablo Torrez Caballero & Jaimis Sajid Leon Colqui & Sérgio Kurokawa, 2021. "Transient Analysis of Multiphase Transmission Lines Located above Frequency-Dependent Soils," Energies, MDPI, vol. 14(17), pages 1-26, August.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:17:p:5252-:d:621268
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    References listed on IDEAS

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    1. Theofilos A. Papadopoulos & Andreas I. Chrysochos & Christos K. Traianos & Grigoris Papagiannis, 2020. "Closed-Form Expressions for the Analysis of Wave Propagation in Overhead Distribution Lines," Energies, MDPI, vol. 13(17), pages 1-29, September.
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    Cited by:

    1. Jaimis Sajid Leon Colqui & Rodolfo Antônio Ribeiro de Moura & Marco Aurélio De Oliveira Schroeder & José Pissolato Filho & Sérgio Kurokawa, 2023. "The Impact of Transmission Line Modeling on Lightning Overvoltage," Energies, MDPI, vol. 16(3), pages 1-19, January.

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