Influence of soil resistivity on substations earth grounding system

摘要

The paper emphasizes the variation of the grounding resistance for the components of the earth grounding, depending on the nature of the soil, that is based on the soil resistivity. It also presents the variation of the touch and step voltage values according to the same resistivity of the soil. The study can be expanded, making a database of table with results, allowing a quick reading of touch and step voltages for different configurations of substations and different soil types.