earthing system; finite element model; perturbation method
Abstract :
[en] This paper deals with the electrokinetic modeling of earthing systems by means of a sub-domain perturbation finite element technique. An axisymmetric problem is solved for each single grounding rod. Its solution must then be corrected by taking into account the influence of the other rods. The electric scalar potential is transferred from one problem to the other through projections between meshes. An inherently 3D problem can thus be solved as a succession of 2D sub-problems, what significantly speeds up the solution and enables to tackle complicated grounding systems. The method is validated by means of both analytical formulas and 3D computations.
Disciplines :
Electrical & electronics engineering
Author, co-author :
V Sabariego, Ruth ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Applied and Computational Electromagnetics (ACE)
Ferreira da Luz, Mauricio V.; Federal University of Santa Catarina - UFSC, Santa Catarina, Florianopolis, Brazil > GRUCAD
Nsekere, Jean-Pierre; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Transport et distribution de l'énergie
Kuo-Peng, Patrick; Federal University of Santa Catarina - UFSC, Santa Catarina, Florianopolis, Brazil > GRUCAD
Lilien, Jean-Louis ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Transport et distribution de l'énergie
Dular, Patrick ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Applied and Computational Electromagnetics (ACE)
Language :
English
Title :
Perturbation finite element method for the analysis of earthing systems with vertical rods
