Pillar star-shaped grounding system

The pillar grounding system formed of vertical electrodes inside the cylindrical concrete foundation and a star-shaped wire electrode system, are analyzed in the paper. For the sake of modeling the influence of a concrete cylinder, which surrounds a vertical ground electrode, a recently proposed procedure is applied. The procedure reduces this problem to analysis of a grounding system in the homogeneous ground. Solving the system of integral equations, unknown currents and, afterwards, the grounding system's resistance are determined. Streszczenie. W pracy przeanalizowano kolumnowy system uziemiający zlozony z pionowych elektrod i elektrod drutowych o ksztalcie gwiazdy. Zastosowana procedura pozwala na analize systemu otoczonego betonem tak jak systemu umieszczonego w jednolitym gruncie. Z zastosowaniem metody calkowej określono rezystancje uziomu (Kolumnowy system uziemiający).