The FEM Analysis Of Complex Grounding
Systems By The Program Package FIELD GS
Author(s)
M. Trlep, A. Hamler & B. Hribernik
Abstract
This paper shows the practical use of the software package FIELD_GS for the
analysis of complex grounding systems (GS) in the protection of power and
industrial systems. In order to get an accurate field calculation the finite element
method (FEM) with isoparametric second order finite elements was applied.
The automatic discretization of the soil domain was performed with 20-node 3D
finite elements, while the GS domain was carried out using 3-node ID finite
elements. In the program solution a spatial transformation of the "semi-infinite
space" into the finite space was applied. The FIELD_GS is suitable for any GS
configuration and for isotropic or anisotropic soil properties.
1 Introduction
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