Electric fields of grounding electrodes with frequency dependent soil parameters

Autor:	Rafael Alipio, Sandro de Castro Assis, Marcio Matias Afonso, Marco Aurélio O. Schroeder, Tarcísio Antônio Santos de Oliveira
Rok vydání:	2012
Předmět:	Permittivity Materials science Field (physics) business.industry Ground Electrical engineering Energy Engineering and Power Technology Mechanics Conductivity Lightning Electrical resistivity and conductivity Electric field Electrode Electrical and Electronic Engineering business
Zdroj:	Electric Power Systems Research. 83:220-226
ISSN:	0378-7796
DOI:	10.1016/j.epsr.2011.11.011
Popis:	The profile of the electric field developed at the ground level above a horizontal grounding electrode due to the impression to the electrode of waves resembling lightning currents of first and subsequent strokes was calculated using an electromagnetic model. The simulation considered both assumptions constant values for soil parameters resistivity and permittivity and frequency dependent values. This dependence was given by an expression derived from field measurements. It was found that the frequency dependence of soil parameters is relevant, mainly at low conductivity soils and short front-time current waves, leading to a significant decrease of the electric field profile.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9442f17f2bce13778954ba0a4bc37c00 https://doi.org/10.1016/j.epsr.2011.11.011 Zobrazit plný text záznamu Full Text from ScienceDirect