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http://dx.doi.org/10.5762/KAIS.2016.17.8.536

Analysis of Grounding Resistance and Soil Resistivity Using Mock-up System in Jeju Soil  

Boo, Chang-Jin (Department of Electrical Engineering, Jeju International University)
Ko, Bong-Woon (Department of Electrical Engineering, Jeju International University)
Kim, Jeong-Hyuk (Department of Electrical Engineering, Jeju International University)
Oh, Seong-Bo (Department of Electrical Engineering, Jeju National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.17, no.8, 2016 , pp. 536-543 More about this Journal
Abstract
The installation of grounding systems is important for the safe operation of power systems, and the soil resistivity is an important design consideration for such systems. It varies markedly with the soil type, moisture content and temperature. The Jeju geological structure is formed in a multi-layered structure characteristic of volcanic areas and, and the geological ground resistance values can appear even constructed the same areas ground system different from the soil structure. In this study, a mock-up system using representative soil from Jeju was constructed to analyze the variation of the grounding resistance. The mock-up system was configured using the Gauss-Newton algorithm inversion method to analyze the model numerically using the Wenner method through the soil resistivity measurements used to create the ground model. Also, we analyzed the change in the general ground resistance characteristics of the copper rod, copper pipe, and carbon rod that are used for grounding. The variation of the grounding resistance with the hydration status was found to be $2.9[{\Omega}]$, $16.5[{\Omega}]$ and $20.1[{\Omega}]$ for the copper rod, copper pipes, and carbon rod, respectively, and the influence of the ground moisture resistance of the carbon rod was found to be the lowest with a value of $141[{\Omega}]$.
Keywords
Grounding resistance; Gauss-Newton; Inversion; Mock-up system; Soil resistivity;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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