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Transient Responses on Transmission Lines Located above Frequency-Dependent Soil with Variable Water Content
(2021-01-01)
This paper investigates the influence of frequency-dependent soil parameters with variable water content in the transient responses of single-circuit three-phase transmission line (TL) subjected to lightning subsequent ...
An analysis of frequency-dependent soil models: Influence on the transient responses
(2021-08-15)
Longitudinal impedance and transversal admittance of overhead transmission line (OHTL) are dependent on the ground which the line conductors are located. Several models in the literature consider the soil as an ideal ...
Computation of ground potential rise and grounding impedance of simple arrangement of electrodes buried in frequency-dependent stratified soil
(2021-09-01)
Grounding electrodes are used to provide a low-impedance dissipation path for the excess lightning or fault currents. Several studies have been dedicated to the computation of the grounding impedance of different electrode ...
Computation of Surge Voltage in Transmission Tower Located above Frequency-Dependent Soil
(2021-01-01)
The purpose of this paper is to investigate the influence of frequency-dependent soils with variable soil content on the transient voltages at transmission towers. First, a comparative analysis between the impedance of ...
Analysis of transient voltages and currents in short transmission lines on frequency-dependent soils☆
(2021-05-01)
Accurate modeling of overhead transmission lines (OHTLs) for transient analysis require that the ground which the phase conductors are suspended be considered on the longitudinal impedance and transversal admittance matrices. ...
Dependência da frequência dos parâmetros do solo: efeito no comportamento impulsivo de aterramentos elétricos
(Universidade Federal de Minas GeraisUFMG, 2013-07-30)
This PhD dissertation is dedicated to the study of the frequency dependence of soil electrical parameters and to the analysis of the impact of such phenomenon on the grounding response to transients, namely those associated ...
A New Approach to Compute Grounding Impedance of Rods in a Frequency Dependent Multi-layer Soil
(Ieee, 2020-01-01)
Long cylindrical rods are commonly employed to grounding system in transmission lines and they can be buried in stratified soils. In this condition, the grounding impedance is significantly modified by the presence of ...
A new approach to compute grounding impedance of rods in a frequency dependent multi-layer soil
(2020-08-02)
Long cylindrical rods are commonly employed to grounding system in transmission lines and they can be buried in stratified soils. In this condition, the grounding impedance is significantly modified by the presence of ...
Transient analysis of multiphase transmission lines located above frequency-dependent soils
(2021-09-01)
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 ...
A Comparison of Frequency-Dependent Soil Models: Electromagnetic Transient Analysis of Overhead Transmission Lines Using Modal Decomposition
(2022-03-01)
This article investigates the influence of four causal frequency-dependent (FD) soil models and their impact on the responses of a multiphase overhead transmission line (OHTL) with ground wires, generated by a lightning ...