An Improved Circuit-Based Grounding Electrode Considering Frequency Dependence of Soil Parameters

Othman, Ruqayyah; Abdul‐Malek, Zulkurnain

doi:10.1109/icecos.2018.8605248

Cited by 2 publications

(1 citation statement)

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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]. Due to the lack of information regarding the issue, further improvement needs to be done to tackle the inaccuracy problem for circuit-based model.…”

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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