Comparison of Lightning-Induced Current Simulations in the Time and Frequency Domains Using Different Computer Codes

Aniserowicz, K.; Maksimowicz, Tomasz

doi:10.1109/temc.2010.2076338

Cited by 17 publications

(14 citation statements)

References 17 publications

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“…The perfectly electrically conducting (PEC) ground plane is assumed and taken into account by the method of images. The dimensions of the building are (length x width x height) 40x40x10 m [25]. The LPS is assumed to be made of perfectly conducting wires of radius 4 mm forming a square mesh with width 1 m. For readability, a coarse mesh is shown in Fig.…”

Section: Wire-grid Shieldsmentioning

confidence: 99%

“…It is assumed that the lightning strikes a corner of the building, and the lightning channel is represented by a vertical lossy monopole antenna with distributed loading [26]. To be specific, the monopole of the height 2 km and radius of 5 cm is uniformly loaded with series inductance of 4.5 µH/m and series resistance of 1 Ω/m [25]. The antenna is fed at its base by a delta-gap unit-voltage source.…”

Section: Wire-grid Shieldsmentioning

confidence: 99%

See 1 more Smart Citation

An Efficient Framework for Analysis of Wire-Grid Shielding Structures over a Broad Frequency Range

Karwowski¹,

Нога²,

Topa³

2016

RADIOENGINEERING

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Section: Wire-grid Shieldsmentioning

confidence: 99%

Section: Wire-grid Shieldsmentioning

confidence: 99%

An Efficient Framework for Analysis of Wire-Grid Shielding Structures over a Broad Frequency Range

Karwowski¹,

Нога²,

Topa³

2016

RADIOENGINEERING

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“…In order to assess the limits of validity of this analytical approach, the current in the loop was also calculated with a computer code that uses the Method of Moments (MoM), which is based on a more complete electromagnetic formulation. The accuracies of several numerical methods in calculating lightning induced surges have been investigated by Ansierowicz and Maksimovicz [3], which allows the conclusion that codes based on MoM provide reasonable results for the frequency range considered in this paper.…”

Section: Short-circuited Loopsmentioning

confidence: 99%

Impulsive currents and voltages induced into loops due to nearby lightning

Panicali¹,

Barbosa

2011

2011 International Symposium on Lightning Protection

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This paper presents the effect of considering propagation delays and displacement currents in the calculation of currents and voltages induced into loops due to nearby lightning flashes. Results from numerical calculation, based on a more complete electromagnetic formulation (Method of Moments -MoM) are compared with results from a quasistationary approach. It is shown that the voltages induced into loops by very fast currents, such as the subsequent lightning strokes, can be significantly influenced by the displacement currents and propagation delays. This effect depends also on the loop dimensions and its earthing configuration. In the example considered in this paper, the induced voltage reached a peak value one-third above the peak value calculated by magnetic induction only, besides exhibiting oscillatory wave forms. This increase in the magnitude and change of the induced voltage waveform may impact the design of clearance distances and, under specific conditions, may also jeopardize electronic equipment that otherwise would be considered safe based on the quasi-stationary approach.

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“…In the past, various numerical codes employing method of moments (MoM) have been used to simulate induced current caused by lightening . The similarity and discrepancies of these codes are discussed in Refs.…”

Section: Introductionmentioning

confidence: 99%

Parasitic effects of the metallic towers on the characteristics of the broadcast antennas

Ali

Colantonio

Altintas

2017

Int J RF Microw Comput Aided Eng

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In this article, we use a tool NEC (Numerical Electromagnetic Code) to model antenna on top of a tower structure. Simulation results for the parasitic effect of the tower on characteristics of broadcast DVB‐T (Digital Video Broadcasting Terrestrial) antenna such as input impedance, return loss, gain, front‐to‐back ratio and radiation patterns are reported. In addition, the effect of a nearby tower on antenna characteristics is studied. A 3D tower and broadband antenna in the UHF (470‐862) MHz band are constructed. The antenna works for both digital and analog TV with return loss (RL) ≥ 10 dB, fractional bandwidth of 87% and gain of 12.3 dBi at center frequency. The effective radiated power is calculated by mounting the antenna at each face of the tower to give a satisfactory coverage to a region around the antenna.

show abstract

Comparison of Lightning-Induced Current Simulations in the Time and Frequency Domains Using Different Computer Codes

Cited by 17 publications

References 17 publications

An Efficient Framework for Analysis of Wire-Grid Shielding Structures over a Broad Frequency Range

An Efficient Framework for Analysis of Wire-Grid Shielding Structures over a Broad Frequency Range

Impulsive currents and voltages induced into loops due to nearby lightning

Parasitic effects of the metallic towers on the characteristics of the broadcast antennas

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