On the representation of thin wires inside lossy dielectric materials for FDTD‐based LEMP simulations

Tatematsu, Akiyoshi (Electric Power Engineering Research Laboratory, Central Research Institute of Electric Power Industry, Kanagawa, Japan) ; Rachidi, Farhad (EMC Laboratory, Electrical Engineering Institute, Swiss Federal Institute of Technology (EPFL), Lausanne, Switzerland) ; Rubinstein, Marcos (School of Management and Engineering Vaud, HES-SO // University of Applied Sciences Western Switzerland)

The finite-difference time-domain method is one of the most widely used numerical electromagnetic computation techniques, and it has become an effective tool for analyzing electromagnetic transient phenomena in three-dimensional structures and grounding systems. However, the available approaches for representing thin wires apply only to bare conductors such as overhead power lines and earth electrodes. In this work, we demonstrate the applicability of thin-wire representation techniques to wires surrounded by both lossy and lossless media, such as reinforcing bars inside lossy concrete. The validated technique is then illustrated through the study of a reinforced-concrete building struck by lightning to evaluate the effect of concrete on the penetration of lightning electromagnetic pulses inside the building.


Keywords:
Article Type:
scientifique
Faculty:
Ingénierie et Architecture
School:
HEIG-VD
Institute:
IICT - Institut des Technologies de l'Information et de la Communication
Date:
2019-06
Pagination:
9 p.
Published in:
IEEJ Transactions on Electrical and Electronic Engineering
Numeration (vol. no.):
2019, vol. 14, pp. 1314-1322
DOI:
ISSN:
1931-4973
Appears in Collection:

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 Record created 2019-10-29, last modified 2019-10-29

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