Evaluation of Grounding Resistance and Inversion Method to Estimate Soil Electrical Grounding Parameters

Autor: F Slaoui, F Erchiqui
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: International Journal of Multiphysics, Vol 4, Iss 3 (2016)
Druh dokumentu: article
ISSN: 1750-9548
2048-3961
DOI: 10.1260/1750-9548.4.3.201
Popis: Soil resistivity plays a key role in designing grounding systems for high-voltage transmission lines and substations. The objectives of this paper are to determine the best estimated value of the apparent resistivity or electrode grounding resistance of N-layer soil and to use a new inversion method to precisely determine earth parameters. The inversion of electrical sounding data does not yield a unique solution, and a single model to interpret the observations is sought. This paper presents a new inversion method to statistically estimate soil parameters from Schlumberger and Wenner measurements. To validate the method and test the inversion scheme, four soundings were selected: two theoretical and two in the field. The procedure was applied using test data and a satisfactory soil model was obtained.
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