Transient Analysis on Multiphase Transmission Line Above Lossy Ground Combining Vector Fitting Technique in ATP Tool

Colqui, Jaimis Sajid León; Araújo, Anderson Ricardo Justo de; Pascoalato, Tainá Fernanda Garbelim; Kurokawa, Sérgio; Filho, José Pissolato

doi:10.1109/access.2022.3198677

Cited by 3 publications

(1 citation statement)

References 26 publications

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“…In general, a rational approximation can be conducted using the Bode method, as described in [24], and it is similar to the approach taken in ATP software. Alternatively, it can be accomplished using the vector fitting technique, as proposed in [25,26], or via techniques based on Green's functions, as suggested in [27]. To perform the rational approximation of H, J. Marti's model, one must associate a time delay τ to the H function; this refers to the wave propagation time, and it is also used in Bergeron's and ULM models.…”

Section: Introductionmentioning

confidence: 99%

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

Robles Balestero,

Leon Colqui,

Kurokawa

2023

Energies

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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.

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Section: Introductionmentioning

confidence: 99%

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

Robles Balestero,

Leon Colqui,

Kurokawa

2023

Energies

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The Evaluation of Transmission Line Modeling on Lightning Performance Considering Surger Arresters: Impact in the Energy and Backflashover Rates

Colqui,

Moura,

Schroeder

et al. 2024

J Control Autom Electr Syst

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The Impact of Transmission Line Modeling on Lightning Overvoltage

et al. 2023

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In most of the work that investigates the backflashover phenomenon due to direct lightning strikes, using EMT-type simulators, transmission lines are represented by the J. Marti model and the ground effect is computed employing J. R. Carson’s formulations. Thus, the ground displacement current is neglected, the line voltage definition corresponds to the wire potential formulation, and soil resistivity is considered frequency-independent. These considerations can lead to erroneous measurements of the occurrences of the backflashover phenomenon in the insulator strings of transmission line. In this sense, this paper presents a systematic sensitivity analysis study of lightning overvoltage in insulator strings considering more physically consistent models of the transmission line, which consider the displacement current, ground admittance correction, rigorous voltage definition, and frequency-dependent soil parameters. According to the results, for the case study, transmission line parameters modeling can present a maximum percentual difference of around 71.54%, considering the frequency range of first strokes. This difference leads to a percent difference of around 5.25% in the maximum overvoltage across the insulator strings. These differences confirm that the occurrence or not of backflashover in the insulator strings, including the disruption time, are sensitive to the line model considered.

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Transient Analysis on Multiphase Transmission Line Above Lossy Ground Combining Vector Fitting Technique in ATP Tool

Cited by 3 publications

References 26 publications

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

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

The Evaluation of Transmission Line Modeling on Lightning Performance Considering Surger Arresters: Impact in the Energy and Backflashover Rates

The Impact of Transmission Line Modeling on Lightning Overvoltage

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