An alternative procedure to obtain the ABCD matrix of multiphase transmission lines: Validation and applications

Colqui, Jaimis Sajid León; Kurokawa, Sérgio; Pissolato, J.

doi:10.1016/j.epsr.2019.106161

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…Step 4: Calculate the line's two-port equations (y-parameters) that relate terminals' currents to voltages using the line parameters calculated in step 2. The two-port equations are described in [53]. Compute voltages and currents at line terminals in the frequency domain.…”

Section: Methodsmentioning

confidence: 99%

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

et al. 2021

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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.

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Section: Methodsmentioning

confidence: 99%

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

et al. 2021

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“…In order to determine the ABCD parameters of a transmission line, the short-circuited condition and open-circuited condition of the receiving end are taken into consideration. In the short-circuit condition, the receiving end is shorted, resulting in equal to zero [23]. The block representation of a shorted transmission line case is shown in Figure 3.…”

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Transmission Line Performance Assessment and Design using MATLAB

2020

IJETER

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Due to the increase in demand for electrical power yet issues with economic constraints, the efficiency of transmission lines has become a topic of interest for many. In this study, the researchers will be executing a program that actively simulates the transmission line performance test for the short, medium, and long transmission line cases through the use of a numerical computing environment, MATLAB. The parameters of the transmission lines to be assessed will be defined by the user, including aspects such as the length and characteristics of the material. While the program is taking into consideration the individual ABCD constants of the different length transmission lines for the calculations, the output from this would be observed as the characteristics (e.g. power factor, transmission line efficiency, and voltage regulation) of the user-input transmission line. With specifications on voltage regulation and line transmission efficiency, the results will be analyzed by the system in order to determine whether or not the transmission line being tested by the user is applicable for use.

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Harmonic grounding impedance of rods in horizontally stratified soils using ABCD-matrix approach

Araújo

Azevedo

Colqui

et al. 2023

e-Prime - Advances in Electrical Engineering, Electronics and E

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An alternative procedure to obtain the ABCD matrix of multiphase transmission lines: Validation and applications

Cited by 3 publications

References 13 publications

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

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

Transmission Line Performance Assessment and Design using MATLAB

Harmonic grounding impedance of rods in horizontally stratified soils using ABCD-matrix approach

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