Comparative assessment of the effect of earthing grid configurations on the earthing system using IEEE and Finite Element Methods

Ayodele, T.R.; Ogunjuyigbe, A.S.O.; Oyewole, Olawale

doi:10.1016/j.jestch.2018.07.003

Cited by 17 publications

(20 citation statements)

References 11 publications

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“…16 Study shows that soils with high resistivity posses negative effect on earth electrodes and gride. 17 However, the roil resistivity depends on many factors; below are some factors which determine the soil resistivity to the flow of leakage current:…”

Section: Soil Resistivitymentioning

confidence: 99%

Assessment and prediction of earthing resistance in domestic installation

Nti

Appiah

Nyarko‐Boateng

2020

Engineering Reports

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Before the introduction of the Ghana Electrical Wiring Regulations 2012 (L.I. 2008), most residential wiring within Sunyani Municipality was carried out by unlicensed artisans. This situation imposed a need to investigate the effectiveness of the earthing systems carried in the Sunyani municipality. Therefore, the current study sought to evaluate earthing resistance effectiveness within the Sunyani Municipality by measuring the earthing resistance of 1004 homes with an earthing resistance tester from January 2016 to April 2018. Again, we predict future resistance based on measured values. Out of 1004 buildings surveyed, 834 had an earthing system in place. Twenty‐eight buildings, recorded an earth electrode test within 0.0 to 10 Ω representing 3.36%. A high percentage (96.64%) had their earth electrode resistance above the acceptable value by the Energy Commission of Ghana. The results revealed that the overall effectiveness of earthing in the domestic installation in Sunyani Municipality is below average compared with Ghana Energy Commission benchmark.

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Section: Soil Resistivitymentioning

confidence: 99%

Assessment and prediction of earthing resistance in domestic installation

Nti

Appiah

Nyarko‐Boateng

2020

Engineering Reports

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“…Description of the FEM based on the theory of images (TOI), which is used in this paper, is given next based on [28][29][30][31][32][33][34][35][36][37]. Appendix 1 gives an idea about the application of TOI on the uniform, two-layer as well as layered soil structure.…”

Section: Appendixmentioning

confidence: 99%

“…In this paper, we have used a two-layer soil structure along with the surface layer. As per [30,36], this three-layer soil structure can be converted into its equivalent uniform soil structure. Depending on the value of K, i.e.…”

Section: Appendixmentioning

confidence: 99%

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Evaluation of sustainability of microgrid grounding grid design under varying soil conditions through estimation of touch, step voltages and novel methods of earthing

Bhatia

Darji

Jariwala

2020

IET Science, Measurement & Technology

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“…Having such a procedure not only means a considerable economic saving given the cost of direct measurement on the ground but also a considerable simplification when the step potentials must be estimated in urban areas where direct measurement is often difficult. From decades, many authors have spent great efforts to propose calculation methods for step potentials, from the exclusive use of approximate analytical formulas [4,5] to using complex numerical techniques [6], while they were measured in the field by using various strategies [7,8]. However, none of the methods known to the authors of this paper is as simple and quick to apply as the one proposed here [9].…”

Section: Introductionmentioning

confidence: 99%

Estimation of an Upper Bound to the Value of the Step Potentials in Two-Layered Soils from Grounding Resistance Measurements

Moreno

Simón²,

Faleiro

et al. 2020

Materials

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Due to the constant updating of regulatory standards on safety issues in electrical installations, limits are established for the maximum step potential that an installation can hold in a ground fault situation. In this paper, an upper bound to the maximum value of the step potentials arising in the soil surface when a fault takes place in a grounded electrical installation is estimated by means of a simple procedure. The direct measurement of the grounding electrode resistance together with some information about the soil resistivity and the knowledge of characteristic parameters of the electrode are used for the calculation of that upper bound. The procedure is tested at numerical simulation level by using different electrodes in several different scenarios corresponding to two-layered soils with different resistivity ratios. The dependency of the calculated upper bound with the electrode burial depth is also studied. Finally, a real case study is presented, and the results of the field measurements are shown as an example of the validity of the procedure.

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Comparative assessment of the effect of earthing grid configurations on the earthing system using IEEE and Finite Element Methods

Cited by 17 publications

References 11 publications

Assessment and prediction of earthing resistance in domestic installation

Assessment and prediction of earthing resistance in domestic installation

Evaluation of sustainability of microgrid grounding grid design under varying soil conditions through estimation of touch, step voltages and novel methods of earthing

Estimation of an Upper Bound to the Value of the Step Potentials in Two-Layered Soils from Grounding Resistance Measurements

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