FEM MODELING OF GROUNDED SYSTEMS WITH UNBOUNDED APPROACH

This paper presents a GROUND-3D update which allows the modelling of g rounded systems by 3D-FEM. We have developed a formulation in order to represent the remote point without shortening the domain as in the tr aditional approach. Accuracy is improved, and the number of unknowns a rising from the FEM formulation is significantly reduced as well. We c an model large substation grounded meshes with microcomputers by using the mapping presented here.