Transient response of grounding systems under impulse lightning current

Djamel, Idir; Slaoui, F. H.; Semaan, Georges

doi:10.1109/pq.2016.7724092

Cited by 9 publications

(7 citation statements)

References 14 publications

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“…It is important to study the effect of the thickness of the upper layers on the behavior of the grounding electrodes when they are exposed to lightning strokes. Figure (10) illustrates that the maximum value of the GPR is increased with the increase of the upper layer thickness in the case of a negative reflection coefficient. On the contrary, in the case of a positive reflection coefficient, the GPR decreases with the increase in the upper layer thickness.…”

Section: Impact Of the Upper Layer Thickness On The Performance Of Th...mentioning

confidence: 96%

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A study on the influences of high soil resistivity on the behavior of the grounding electrodes affected by lightning strokes

Gouda

Dein

Yassin

2023

Preprint

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This article presents a study for the investigation of the impacts of the high soil resistivity of homogeneous and heterogeneous soils on the behavior of the grounding electrodes affected by lightning strokes when the soil ionization phenomenon is considered. Investigations are done on the performance of the grounding electrode when the soil resistivity is taken between 500 and 2000 Ω.m in homogeneous soil and for positive and negative reflection factors in case of heterogeneous soils. In the proposed model of this study for heterogeneous soils, it is taken into account that each layer of soil has its own resistivity and its own permittivity which are frequency-dependent. The field of the soil ionization around grounding electrode under lightning is investigated. The results are presented to understand the performance of the grounding electrode such as impulse impedance, grounding potential rise, front time of lightning stroke, the peak current of a lightning stroke, and type of grounding electrode and effective length of a grounding electrode. The transmission line approach with the aid of the (ATP) which is defined as hybrid approach is used to compute the transient performance of the vertical and horizontal grounding electrodes under lightning influence. The results are supported by the latest published articles to ensure its credibility.

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Section: Impact Of the Upper Layer Thickness On The Performance Of Th...mentioning

confidence: 96%

“…Figure(10) Maximum ground potential rise (GPR) versus various thicknesses of the upper layer soil (a) vertical grounding electrode at heterogeneous soil (b) horizontal grounding electrode heterogeneous soil, the peak current of lightning is 100 kA.…”

mentioning

confidence: 99%

A study on the influences of high soil resistivity on the behavior of the grounding electrodes affected by lightning strokes

Gouda

Dein

Yassin

2023

Preprint

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“…The critical electric field intensity as a function of the soil resistivity is considered by [12], [13], while the influence of the frequency variation on the soil ionization phenomenon is ignored by some investigators [14].…”

Section: B Critical Breakdown Field Strength In Uniform and Two Soil ...mentioning

confidence: 99%

“…This suggested factor has to be investigated by the authors in the future. Damir Cavka et al [12], [13], Idir Djamel et al [14], Leonid Grcev [15], L. Grcev et al [16], Rafael Alipio et al [17], Adriana G. Pedrosa et al [18], and S. Visacro [19] studied the performance of the grounding electrodes in uniform soil when lightning current took place in the network. They considered the frequency impact on the surrounding soil in their researches.…”

Section: Introductionmentioning

confidence: 99%

Performance of Grounding Electrodes Under Lightning Strokes in Uniform and Two-Layer Soils Considering Soil Ionization

et al. 2022

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This article presented the characteristics of the grounding electrodes in uniform and two layer soils when subjected to lightning including the impacts of soil ionization with frequency, soil resistivity, and permittivity variations. The critical breakdown field strength of two layer soils with different values of the reflection factors was presented. The transient probabilistic grounding potential rise and the transient impedances of the horizontal and vertical electrodes were investigated in uniform and two layer soils including the effect of soil ionization with frequency. Finally, the influences of resistivity and permittivity variations which have substantial impacts on the electric field at the occurrence of the soil ionization were considered. Moreover, transmission line approach (TL) with the aid of ATP has been used to compute the transient grounding voltages. The results indicated that the reflection factor has a significant impact on the equivalent radius of the grounding electrode. It is also observed that the peak values of the lightning induced voltages decreases sharply when the soil ionization phenomenon considering the variations in soil resistivity and permittivity with the stroke frequency changes. Furthermore, the impedances of the burial electrodes that have negative reflection factors were lower than that in case of positive reflection factors.

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“…Many studies have been done previously to improve the circuit-based model where some of the parameters have been considered, such as the integration of soil ionization effect, current rate of rise, mutual coupling, frequency influence, and others for all types of grounding electrode [13][14][15][16][17][18][19][20][21][22][23]. However, the study regarding the influence of frequency dependent of soil parameters is still not covered entirely since there is only one study for each horizontal and vertical grounding electrode, and under lightning current only for the input signal, and the results is not sufficient since it used the equivalent frequency [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Circuit-based grounding electrode considering frequency dependence for different input current

Othman

Abdul‐Malek

2020

IJEECS

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<p>This paper presents a simulation work of circuit-based grounding electrode considering frequency dependence of soil parameters for three input currents which are impulse, AC 50 Hz, and DC. The circuit parameters were determined by using Dwight and Sunde equations where a single horizontal grounding electrode was considered. Scott model was used for the frequency dependent model, to determine the frequency dependent soil resistivity and relative permittivity. It is found that the voltage response of the impulse current was highly affected (75.2%) by the frequency compared to the voltage response of AC 50 Hz and DC. The impulse current response also gave the lowest peak in the analysis by the influence of frequency which make it better compared to the two other inputs. Therefore, it can be concluded that the frequency dependent of soil parameters is crucial and need to be considered in the transient analysis for any kind of input current to obtain accurate results.</p>

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Transient response of grounding systems under impulse lightning current

Cited by 9 publications

References 14 publications

A study on the influences of high soil resistivity on the behavior of the grounding electrodes affected by lightning strokes

A study on the influences of high soil resistivity on the behavior of the grounding electrodes affected by lightning strokes

Performance of Grounding Electrodes Under Lightning Strokes in Uniform and Two-Layer Soils Considering Soil Ionization

Circuit-based grounding electrode considering frequency dependence for different input current

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