Abstract
The aim of the paper is to analyze the influence of selected geoelectrical models on the correctness of a simple grounding system performance estimation. A comparison of different multilayer soil models used to compute grounding system resistance was made as an alternative to typical uniform and two-layer soil conceptions. Experimental tests of a simple grounding system are described. Preliminary measurements were conducted at the new open-air laboratory belonging to Rzeszow University of Technology (RUT), Poland. Finally, measurements of soil resistivity with the use of different methods and at the same time, the ground resistance measurements of simple grounding system were performed. Using the experimental data, a different multilayer soil models were proposed and the grounding resistances of the same grounding system were computed. In case of impact excitations characteristic for lightning currents, the potential distributions around the analyzed grounding system are shown for the selected multilayer soil, and then, the obtained simulation results were compared with the case of the corresponding uniform soil.
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Schedule a callMore From: Scientific Journals of Rzeszów University of Technology, Series: Electrotechnics
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