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ABSTRACT
Earth networks play an essential role in protecting the building and people from external hazards such as lightning. They are called upon to play increasingly important roles in the context of the smart building with its electrical devices. This article proposes a modelling method adapted to the particularities of buried conductors. The proposed models cover a wide range of frequencies and are expressed in the form of equivalent electrical circuits that can be easily implemented in 0D simulation software to integrate external disturbance sources, components and heterogeneous systems.
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Read the articleAUTHORS
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James ROUDET: University Professor Université Grenoble Alpes, CNRS, Grenoble INP, G2Elab, Grenoble, France
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Edith CLAVEL: Associate Professor HdR Université Grenoble Alpes, CNRS, Grenoble INP, G2Elab, Grenoble, France
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Jean-Michel GUICHON: Senior Lecturer, Grenoble Alpes University, CNRS, Grenoble INP, G2Elab, Grenoble, France
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Alexis DERBEY: CNRS Engineer Université Grenoble Alpes, CNRS, Grenoble INP, G2Elab, Grenoble, France
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Patrice JOYEUX: Hager Company Engineer, Hager Electro, Obernai, France
INTRODUCTION
The aim of this article is to show which models can be used in a "circuit or 0D" type simulation of the flow of parasitic currents (lightning, EMC disturbances, etc.) in a building, whether residential or industrial. Numerous studies have been carried out to model the complex phenomena of current conduction within the earth, without however arriving at a simple, usable system model. Added to the physical complexity is the heterogeneity of the earth itself, or the presence of various materials (pipes, embankments, etc.). This potentially makes it impossible to describe the environment in its entirety. When it comes to dimensioning an electrical installation, many other complex elements are added, and the idea here is to propose a global but pertinent study of the building's behavior, rather than very fine, partial local phenomena.
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KEYWORDS
lightning | electromagnetic compatibitity | earth networks | equivalent electrical circuits | 0D simulation
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Earth as an electrical conductor
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