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Keywords = non-perfect conducting grounding electrodes

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11 pages, 4291 KiB  
Article
A Fast Calculation of Partially Corroded, Grounding-Resistive Electrode Electrical Parameters
by Gregorio Denche, Eduardo Faleiro, Gabriel Asensio and Jorge Moreno
Appl. Sci. 2022, 12(23), 12243; https://doi.org/10.3390/app122312243 - 30 Nov 2022
Cited by 3 | Viewed by 1687
Abstract
The calculation of the grounding resistance of electrodes built with partially oxidized non-perfect conductors is addressed in this paper. A model based on circuit analysis to account for internal resistance is used, while the oxidation or partial coating of the conductor surface is [...] Read more.
The calculation of the grounding resistance of electrodes built with partially oxidized non-perfect conductors is addressed in this paper. A model based on circuit analysis to account for internal resistance is used, while the oxidation or partial coating of the conductor surface is modeled using the concept of the equivalent radius of the coated electrode. From the proposed model, the values of the electrical parameters of the grounding electrodes, such as the grounding resistance and the step and touch potentials, are calculated for real electrodes affected by coating or corrosion and compared with those values under ideal conditions. The results show significant differences in certain configurations that may compromise the safety margins established by current regulations. Full article
(This article belongs to the Special Issue Grounding Systems in Transformation Centers)
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