Modeling the lightning earth flash return stroke for studying its effects on engineering systems

Ratnamahilan, P.; Hoole, P.R.P.; Ratnajeevan, S.; Hoole, H.

doi:10.1109/20.250764

Cited by 26 publications

(9 citation statements)

References 11 publications

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“…where V is the potential while R, L and C are the resistance per unit length in Ohms, inductance per unit length in Henry and capacitance per unit length in Farad, respectively (Thirukumran et al, 2013;Hoole, 1993].…”

Section: Finite Difference Methodsmentioning

confidence: 99%

“…The two-dimensional mesh is formulated using equal number of rows and columns. A structured mesh in two dimensions is most often simply a square grid deformed by some coordinate transformation Hoole & Hoole, 1993). Each node of the mesh, except at the boundaries, has an isomorphic local neighbourhood.…”

Section: Cloud-to-ground Lightningmentioning

confidence: 99%

“…Finite difference method (FDM) is an important technique in the field of computations. It is a simple technique for real-time physical processes and developed for solving the wave equation (Thirukumran et al, 2013;Hoole, 1993).…”

Section: Introductionmentioning

confidence: 99%

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Two-Dimensional Free Space Mesh Generation for Cloud-to-Ground Lightning Simulation using Finite Difference Method

Kajaluxshy

Thirukumaran

2016

OUSL Jnl

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The natural lightning environment is a consequence of the interaction of the lightning flash with the aircraft's body. The aircraft can, therefore, be a part of the natural lightning discharge process. Hence, the aircraft becomes exposed by direct effects to the aircraft's body and induced electromagnetic fields to the avionics held within the aircraft due to high power and short time transient. In order to study the expected electric currents and voltages produced over the surface of the aircraft, good knowledge of the waveforms, rates of rise of currents and the voltages produced by direct lightning strikes are required. The flash of the Cloud-to-Ground lightning is represented as a wave equation which carries the parameters of current and potential of the flash. The objective is to identify the potential flow and electric field distribution along the aircraft conductor represented in the finite difference mesh under the thundercloud of 50MV in 1000m height from the ground. A two-dimensional mesh is generated in free-space using finite difference method for the simulation and the lightning wave is presumed to be traversed in free-space where no gravitational and electromagnetic fields exist and all the boundary conditions are applied. The simulation results are comparatively significant and very useful for studying lightning impact on the aerial vehicles struck by the cloud-to-ground lightning.

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Section: Finite Difference Methodsmentioning

confidence: 99%

Section: Cloud-to-ground Lightningmentioning

confidence: 99%

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Two-Dimensional Free Space Mesh Generation for Cloud-to-Ground Lightning Simulation using Finite Difference Method

Kajaluxshy

Thirukumaran

2016

OUSL Jnl

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“…1). The structure was composed of 400 m vertical cylindrical wire of 1 cm radius and uniform resistivity of 4.54⋅10 -5 Ωm [6]. The lower end of the wire was attached directly to the tower top.…”

Section: Estimation Of the Reflection Coefficientsmentioning

confidence: 99%

Traveling Wave Phenomena in Modeling of Lightning Threat to Equipment during Direct Strike to the Tower of GSM Base Station

Markowska

Sowa

2013

ElAEE

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This paperdeals with application of electromagnetic field theory and method of moments in analysis of lightning threat during direct strike to the tower of a GSM base station. The object is to elaborate analytical formulas and parameters for the waveforms of source current which would allow the natural traveling wave processes to be properly accounted for in the calculation results. These waveforms were estimated using numerical modeling. Based on these results, the computations, with the same numerical method, were performed in order to evaluate the level of lightning threat to the equipment of the GSM base station.

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“…Direct strokes to a TL are known to be infrequent in occurrence compared to side strokes. Studies related to lightning phenomena and prevention measures for an OHL were presented in References [34][35][36]. Furthermore, a short-circuit performance test was conducted in terms of the thermal and mechanical performance of the HTLScs in Reference [37] (p. 10-1), which found that "there is no reason to suspect that these conductor systems are unreliable in the short run (up to five years)".…”

Section: Introductionmentioning

confidence: 99%

Evaluation Study of Potential Use of Advanced Conductors in Transmission Line Projects

Beryozkina

2019

Energies

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Transmission networks recently faced new technical and economic challenges. The direct use of advanced technologies and modern methods could solve these issues. This paper discusses the potential application of straightforward technology such as high-temperature low-sag conductors (HTLScs) as an additional measure for the protection and effective operation of overhead power lines. An evaluation was conducted to determine an approach for selecting the cross-sectional area and type of conductor with respect to a fault current limitation. It showed the potential benefits of using HTLScs based on an assessment of the throughput capacity and up-front capital costs. A case study considered two scenarios: the construction of a new power line and reconductoring of the existing one. The data for a real project with two overhead power lines were used. The obtained results are analyzed and discussed in detail in this paper.

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Modeling the lightning earth flash return stroke for studying its effects on engineering systems

Cited by 26 publications

References 11 publications

Two-Dimensional Free Space Mesh Generation for Cloud-to-Ground Lightning Simulation using Finite Difference Method

Two-Dimensional Free Space Mesh Generation for Cloud-to-Ground Lightning Simulation using Finite Difference Method

Traveling Wave Phenomena in Modeling of Lightning Threat to Equipment during Direct Strike to the Tower of GSM Base Station

Evaluation Study of Potential Use of Advanced Conductors in Transmission Line Projects

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