On The Anomalous Asymptotic Performance Of The Regular Computer
Methods For Grounding Analysis
Author(s)
I. Colominas. F. Navarrina & M. Casteleiro
Abstract
On the anomalous asymptotic performance of
the regular computer methods for grounding
analysis
I. Colominas, F. Navarrina & M. Casteleiro
Group of Numerical Methods in Engineering,
Civil Engineering School, University of La CoruAa, Spain
Abstract
Grounding systems are designed to guarantee personal security, protection of equipments
and continuity of power supply. Hence, engineers must compute the equivalent
resistance of the system and the potential distribution on the earth surface
when a fault condition occurs [ I , 2, 31. While very crude approximations were
available until the 70's, several computer methods have been more recently proposed
on the basis of practice, semi-empirical works and intuitive ideas such as superposition
of punctual current sources and error averaging [I, 3,4,5,6]. Although
these techniques are widely used, several problems have been reported. Namely:
large computational requirements, unrealistic results when segmentation of conductors
is increased, and uncertainty
Keywords
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