• Title/Summary/Keyword: multilayer earth structure Wenner

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Estimation of Multilayer Earth Model Parameter from Wenner Four-probe Test Data (Wenner 4측정 데이터를 이용한 다층구조 대지의 파라미터 결정)

  • Kim, Ho-Chan;Boo, Chang-Jin;Kim, Se-Ho;Oh, Seong-Bo;Ko, Young-Su
    • Proceedings of the KIEE Conference
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    • 2006.07d
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    • pp.1781-1782
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    • 2006
  • In this paper, a methodology has been proposed according to which, after carrying out a set of soil's resistivity measurements using Wenner Four-probe data, one can compute the parameters of the multilayer earth structure using a genetic algorithm(GA). The results provided by the GA constitute the indispensable data that can be used in circuital or field simulations of grounding systems. The methodology allows to proceed toward a very efficient simulation of the grounding system and an accurate calculation of potential on the ground's surface.

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Apparent Soil Resistivity Calculation Using Complex Image Method (복소수이미지 방법을 이용한 겉보기 대지저항률 계산)

  • Kim, Ho-Chan;Boo, Chang-Jin;Kang, Min-Jae
    • Journal of IKEEE
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    • v.23 no.1
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    • pp.318-321
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    • 2019
  • The apparent soil resistivity is used for estimating multilayer soil parameters, such as, layer's depth and soil resistivity. The apparent soil resistivity can be measured, and also can be calculated if soil parameters are given, becacuse the apparent soil resistivity is a function of these parameters. Therefore, any optimization algorithms can be used to find these parameters which make the calculated apparent soil resistivity close to the measured one. The equation for calculating the apparent soil resistivity is complicated and time consumed, because it is composed of an infinite integral which includes a zero order Bessel's function of the first kind. In this paper, a fast algorithm for calculating the apparent soil resistivity of horizontal multilayer earth structure has been presented using complex image method.