A finite element method for calculating the electromagnetic fields generated by substation grounding systems

Nekhoul, Bachir; Guérin, Christophe; Labie, Patrice; Meunier, G.; Feuillet, R.; Brunotte, X.

doi:10.1109/20.376472

Cited by 66 publications

(42 citation statements)

References 5 publications

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“…Besides, the model issue of the electromagnetic field approach cannot be easily modified to include nonlinearity due to soil ionization, and combine other nonlinear devices that have time domain models. Among many works, we find those of Nekhoul [13] [14] who have developed a model basing on the electromagnetic field approach. This model starts from …”

Section: The Electromagnetic Field Approachmentioning

confidence: 99%

Comparative study between transmission line theory and the electromagnetic field approach in grounding system analysis

H¹

2012

IOSRJEN

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Section: The Electromagnetic Field Approachmentioning

confidence: 99%

Comparative study between transmission line theory and the electromagnetic field approach in grounding system analysis

H¹

2012

IOSRJEN

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“…In order to study the response of a grounding system under a direct lightning strike, many researchers have developed different models available in literature by method of moments [1] and by finite element method [2,3]. The principal difficulty of the mentioned approach arises when the influence of the soil-air interface is taken into account with the inclusion of open borders.…”

Section: Introductionmentioning

confidence: 99%

A simplified approach to modeling the interaction between grounding grid and lightning stroke

et al. 2011

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In this work, a new approach for the modeling of the interaction between grounding grid and lightning stroke is described. We treat the case of direct and indirect effects of lightning strike. In the case of direct impact, we inject in point of grounding system a current with bi-exponential wave shape and we calculate the distribution of potentials and currents on the grid and the electromagnetic field it will emit. For the second case, we treat a problem of electromagnetic coupling, which is to calculate the induced currents that developed on the grounding grid when this later is illuminated by a lightning channel located in its vicinity. The presented model is validated by comparing the obtained results to the results arising from the full wave (antenna) model available in literature and to the results obtained by using NEC4 software. The principal advantage of the presented approach is the simplicity of the implementation providing a direct determination of the both current and potential distribution along the grounding grid and the related electromagnetic field in an arbitrary point in the air and/or soil, as well.

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“…The electromagnetic field approach for the transient analysis of grounding based on finite element method was developed by Nekhoul et al [4] and Biro and Preis [5]. This model starts from electric or magnetic energy equations, which involves partial differential Maxwell's equations.…”

Section: Introductionmentioning

confidence: 99%

Hybrid approach for modeling transient EM fields generated by large earthing systems

Lefouili

Kerroum²,

Drissi³

2009

Ann. Telecommun.

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A new hybrid approach is adopted in this paper for modeling the transient electromagnetic fields radiated by grounding systems under lightning strokes. This approach is based on electrical dipole theory for determining EM fields' radiation in infinite conductive medium, modified images theory, taking into account the interface in the half space and transmission line approach for determining the longitudinal and leakage currents. This model can be used to predict the transient characteristic of grounding systems because it can calculate electromagnetic field in any point of interest; it is sufficiently accurate, time efficient, and easy to apply.

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A finite element method for calculating the electromagnetic fields generated by substation grounding systems

Cited by 66 publications

References 5 publications

Comparative study between transmission line theory and the electromagnetic field approach in grounding system analysis

Comparative study between transmission line theory and the electromagnetic field approach in grounding system analysis

A simplified approach to modeling the interaction between grounding grid and lightning stroke

Hybrid approach for modeling transient EM fields generated by large earthing systems

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