Title:
COPPER SERPENTINE GROUND ELECTRODE
Author:
Bruno Rodrigues* (bafrodrigues@hotmail.com) e António M. R. Martins** (amrmartins@ipg.pt)
Publication:
Revista Egitania Sciencia  Volume 2
Abstract:
The main goal of this article is the calculation of the ground resistance of a copper
serpentine ground electrode, analytically represented by a sine curve. In this calculation, the socalled
Matrix Method, developed by S. Meliopoulos, was used. Since the ground potencial obeys,
the ground electrode is previously distributed along point current sources in the center of the
conductors. The discrete model is represented by a linear equations system, in order to calculate the
point current sources, controlling the electrode’s tension. This current is the sum of the pontual
currents and Ohm’s law enables the simple calculation of the ground resistance. The results show
that the copper serpentine ground resistance is smaller with increasing depth or wide of the trench. It
was concluded that this electrode, compared with a horizontal buried wire, has lower ground
resistance.
Keywords:
Land Resistance, Matrix Method
