Finite-Difference Time-Domain Analysis of the Electromagnetic Environment in a Reinforced Concrete Structure When Struck by Lightning

Chen, Jiaqing; Zhou, Bihua; Zhao, Fulong; Qiu, Shi

doi:10.1109/temc.2010.2043437

Cited by 26 publications

(10 citation statements)

References 11 publications

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“…To apply the FDTD method to surge analyses, several techniques for representing thin wires [9][10][11], surge arresters [12,13], arcing-horn flashover models [14], and so on have been developed, making the method an effective tool for the study of electromagnetic transient phenomena in power stations, substations, transmission lines, distribution lines, and buildings [15,16]. For direct or nearby lightning strikes, the FDTD method has been used to study electromagnetic fields and voltages induced on electrical wires inside buildings and the effect of building structures [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

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

Tatematsu

Rachidi

Rubinstein

2019

IEEJ Transactions Elec Engng

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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. © 2019 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

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Section: Introductionmentioning

confidence: 99%

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

Tatematsu

Rachidi

Rubinstein

2019

IEEJ Transactions Elec Engng

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“…Prediction models for the current sharing in the down conductors include numerical models (e.g., Method of Moment (MoM) [1] and FDTD [2][3]) and analytical models (e.g., lumped circuit models [4]). Numerical models assumed the conductors as thin wires, because their diameter is very small compared with their length so that it can be ignored [5].…”

Section: Introductionmentioning

confidence: 99%

Magnetic field distribution inside metallic grid-like buildings struck by lightning based on finite element method

Liu

Wang

Zhao

et al. 2014

2014 International Conference on Lightning Protection (ICLP)

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This paper dealt with the evaluation of magnetic field in a lightning protection system (LPS) of a metallic grid-like building. The finite element method was used, based on the numerical solution of Maxwell's equations in frequency domain. The presented method takes into account electromagnetic coupling of the reinforced steel bars automatically. The verification structure under study comprises a cubic cage of 10 m side length having grid-like spatial shields with square meshes of 2 m width. In order to reduce the amount of calculation, a scaled model has been built up and the results are extrapolated using the similarity relations theory. Validation of the proposed method was performed by comparing the results with those computed available in IEC62305-4 equations.

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“…The transient currents distribution in conductors and the transient magnetic fields inside building structures have been investigated by many researchers [3][4][5][6][7][8][9]. Since the conductivity and the permeability of concrete wall are much smaller than those of the steel bars, building structure was comprised of the steel bars only in their models.…”

Section: Introductionmentioning

confidence: 99%

Transient phenomena at point of strike for lightning strokes to concrete wall of building structures

Liu

Wang

Zhao

et al. 2014

2014 International Conference on Lightning Protection (ICLP)

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Tall buildings are vulnerable to suffer lightning. Lightning usually directly hits the lightning protection system (LPS) of buildings, but occasionally lightning may hit a non conductive part of buildings, such as corner of concrete wall. In this paper, finite element method is utilized to simulate the transient phenomenon of the building suffering lightning and the transient currents flowing along the reinforcing steel bar branches are calculated. Lightning strokes to LPS is compared with lightning strokes to concrete wall, and then the variation curves of the transient electric potential and the transient impedance at the injection point are given. The trends of the transient electric potential and impedance of different concrete wall conductivity ranging from 10-7 to 100 Sim were determined

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Finite-Difference Time-Domain Analysis of the Electromagnetic Environment in a Reinforced Concrete Structure When Struck by Lightning

Cited by 26 publications

References 11 publications

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

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

Magnetic field distribution inside metallic grid-like buildings struck by lightning based on finite element method

Transient phenomena at point of strike for lightning strokes to concrete wall of building structures

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