Study of Soil Resistivity Measurements in Vertical Two-Layer Soil Model

Nayel, Mohamed; Lu, Boyang; Tian, Yukun; Zhao, Yingzhen

doi:10.1109/appeec.2012.6307337

Cited by 12 publications

(10 citation statements)

References 11 publications

(14 reference statements)

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“…The resulting distribution of soil resistivity can thus be highly non-uniform. Therefore, in the literature, several research investigations have been reported in which two-layer soil scenarios were studied for steady state performance and resistivity measurements [1][2][3][4][5]. However, the high impulse current performance and the soil ionization phenomenon have not been extensively investigated with two-layer soils.…”

Section: Introductionmentioning

confidence: 99%

Investigation of soil ionization propagation in two-layer soil samples

Elzowawi

Haddad

Griffiths

et al. 2015

2015 50th International Universities Power Engineering Conference (UPEC)

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High current lightning strikes into earthing systems can result in ionization in the soil surrounding the earthing electrode. Most of the published studies investigating this phenomenon have assumed uniform one-layer soil, but soil ionization propagation in a multilayered soil sample has not been extensively addressed. Practical soils may consist of several layers with different water contents, and hence soil resistivity will vary continuously with depth. This investigation considers several sand samples, consisting of two layers with different water contents subjected to standard lightning impulse voltages. A rod-plane electrode configuration was constructed inside a cylindrical plastic test rig, in order to house both wet and dry soil test samples. In order to quantify the propagation of ionization inside the test sample, voltage probes were installed along the tube at specific positions. Localized changes in the ionization zone potential could, therefore, be monitored in real time.

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Section: Introductionmentioning

confidence: 99%

Investigation of soil ionization propagation in two-layer soil samples

Elzowawi

Haddad

Griffiths

et al. 2015

2015 50th International Universities Power Engineering Conference (UPEC)

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“…The presence of vertical layer ground had been studied before by many researchers [18][19][20][21][22]. The outlook for four electrode method results in vertical layer ground is similar to that of horizontal results.If four electrodes were buried in a two-vertical layer ground, a relation between the experiment physical dimensions, ground parameters and apparent ground resistivity measurements will be as follows [22]:…”

Section: Introductionmentioning

confidence: 62%

Numerical and Experimnetal Analysis of Wenner Method in Two- Horizontal and Vertical Layer Ground

Nayel

2014

JES. Journal of Engineering Sciences

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This paper studies the apparent ground resistivity in two-horizontal layer ground and in two-vertical layer ground through the site measurements obtained. Wenner method was used to measure apparent ground resistance in different grounds. A numerical model was proposed to model the four electrode buried in ground. The apparent ground resistivity had been studied for different conditions which are two-horizontal and -vertical layer grounds. Field measurements had been done in various sites close to water channel and also far away from any apparent vertical layer ground. Generally, the calculated results agreed with the measured results. Analytical calculations had been proposed to distinguish between two-horizontal and two-vertical layer ground.

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“…The measured soil resistivity will be an indication of the average soil resistivity over a larger area [41]. If the penetration depth b is very small compared to a and R is the resistance, the resistivity ρ can be calculated using [16, 25]

ρ_{normalw} = 2 π a R

…”

Section: Measurement Techniquesmentioning

confidence: 99%

“…Several works have been performed on soil resistivity measurement in different number of soil layers [14][15][16][17][18]. The effect of buried metallic structure and nearby pipelines on the soil resistivity measurement depends on the measurement method, location of the measurement and the soil structure [19,20].…”

Section: Introductionmentioning

confidence: 99%

Investigation on soil resistivity of two‐layer soil structures using finite element analysis method

Illias

Bakar

2021

IET Science Measure & Tech

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Effective grounding is the most important aspect in every electrical installation because it can ensure efficient equipment operation in the event of electrical faults. Measurement data of soil resistivity is used to assess the suitability of the soil for grounding purpose and also to evaluate the structures of the soil. However, the limitation of soil resistivity measurement is various investigations on two‐layer soil structures cannot be performed due to the variation of natural soil structures is limited. Therefore, in this work, modelling of soil resistivity of two‐layer soil structures was proposed using finite element analysis method to estimate the depth of upper layer of non‐homogeneous soil based on the measurement results from Wenner and Schlumberger methods. Also, using the proposed method, the effect of soil resistivity of each layer on the overall two‐layer soil resistivity was investigated. To validate the results obtained from the proposed method, comparison between the FEA results and measured field data was made. It was found that the average error between both results is <3%. From the model that has been developed, the soil properties can be varied, which enhances the information that can be obtained from two‐layer soil structures.

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Study of Soil Resistivity Measurements in Vertical Two-Layer Soil Model

Cited by 12 publications

References 11 publications

Investigation of soil ionization propagation in two-layer soil samples

Investigation of soil ionization propagation in two-layer soil samples

Numerical and Experimnetal Analysis of Wenner Method in Two- Horizontal and Vertical Layer Ground

Investigation on soil resistivity of two‐layer soil structures using finite element analysis method

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