A powerful tool for grounding design in high voltage substations

The author has collected a set of algorithms implemented by digital computer (with results) in order to find: an optimal estimation of soil parameters using as data a set of measurements of resistivity taken by the F. Wenner method; a previous design of the grounding electrode; an accurate determination of both the intensity distribution factors which the electrode will be obliged to diffuse and the resistance of earth; an accurate calculus of potentials on soil and, as a consequence, the step and touch voltages; and an oriented rectification of the initial design that searches for agreement between calculated values and maximum permissible values. It is also found that is is possible to show the tridimensional evolution and bidimensional evolution of the potential in a preselected way