Document Type : Original papers
Authors
1
Researcher Assistant National Research Institute of Astronomy and Geophysics (NRIAG)
2
Faculty of Energy Engineering, Aswan University, Egypt Faculty of Technological Industry and Energy, Thebes Technological University, Thebes, 85863, Luxor, Egypt
3
Assistant Professor at Department of Electrical Engineering, Faculty of Energy Engineering, Aswan University, Aswan, Egypt
Abstract
ABSTRACT – There are many factors that affect the grounding process, so adapting these factors helps in achieving the best results for the grounding system. It is important to study some natural properties around the ground grid to create an appropriate environment for the grounding process. This paper aims to study the effect of the grid depth on the performance of the grounding grid with the effect of applying a specific line fault based on the experimental work and using a simulation program based on Finite Element Method (FEM). The effect of the change in the laying depth of the grid was monitored on the total ground resistance, the Earth Surface Potential (ESP), the current density, and the electric field of the ground grid. Also, the following soil properties have been taken into consideration; the water content, the thermal and electrical conductivity, heat capacity, density, and the relative permittivity coefficient of the soil. From the obtained results, it is noticed that by increasing the depth of the grounding grid, a decrease in the total ground resistance was observed, and there is a change in the performance of the ground grid. The findings of this investigation offer priceless insights: as grid depth rises, there is a noticeable decrease in overall ground resistance, indicating improved grounding system performance. Variations in ESP, electric field distribution, and current density further highlight the complex nature of the effects of grid depth.
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