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Using the Exact Equivalent π -Circuit Model for Representing Three-Phase Transmission Lines Directly in the Time Domain

Author

Listed:
  • Juan Paulo Robles Balestero

    (Department of Electrical Engineering, São Paulo State University—UNESP, Ilha Solteira 15385-000, Brazil)

  • Jaimis Sajid Leon Colqui

    (School of Electrical and Computer Engineering, State University of Campinas—UNICAMP, Campinas 13083-852, Brazil)

  • Sérgio Kurokawa

    (Department of Electrical Engineering, São Paulo State University—UNESP, Ilha Solteira 15385-000, Brazil)

Abstract

This paper presents a novel three-phase transmission line model for electromagnetic transient simulations that are executed directly within the time domain. This model relies on distributed and frequency-dependent parameters, as well as employs modal transformation for its implementation. The single-phase model of the exact equivalent π -circuit is utilized for each propagation mode. This model combines discrete components, such as resistors, inductors, and capacitors, to accurately emulate the transmission line behavior via linear circuit elements. This model can be seamlessly integrated into various electrical circuit simulation software, thus allowing easy utilization and incorporating time-varying elements to analyze transmission lines. The JMarti model, which comes by default in the Alternative Transient Program, and the numerical Laplace transform method implemented in MATLAB were utilized to validate the proposed solution across various scenarios. An advantage of this model is its independence from the prior calculation of travel time and its exemption from convolutions, inverse Laplace transforms, and Fourier transforms, thus streamlining the simulation process.

Suggested Citation

  • Juan Paulo Robles Balestero & Jaimis Sajid Leon Colqui & Sérgio Kurokawa, 2023. "Using the Exact Equivalent π -Circuit Model for Representing Three-Phase Transmission Lines Directly in the Time Domain," Energies, MDPI, vol. 16(20), pages 1-19, October.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:20:p:7192-:d:1264677
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