Analysis of the Fractal Dimension of Lightning Discharges based on a Stochastic Lightning Attachment Simulation Model

Ioannidis, Alexios I.; Tsaousakis, Georgios A.; Tsovilis, Thomas E.

doi:10.1109/iclp56858.2022.9942652

Cited by 5 publications

(3 citation statements)

References 31 publications

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“…The fractal dimension is a parameter that is used to quantify the complexity of a fractal pattern characterized by selfsimilarity. The fractal dimension of the simulated lightning discharges was estimated based on the box-counting and sandbox algorithms [62], [63]. The employed fractal estimation methods were used to compute the 2-D fractal dimension of the simulated 3-D lightning discharges as the mean value from different projections [63].…”

Section: B Fractal Dimension Of Lightning Dischargesmentioning

confidence: 99%

“…The fractal dimension of the simulated lightning discharges was estimated based on the box-counting and sandbox algorithms [62], [63]. The employed fractal estimation methods were used to compute the 2-D fractal dimension of the simulated 3-D lightning discharges as the mean value from different projections [63]. Thus, comparison with photographic records of natural lightning is enabled.…”

Section: B Fractal Dimension Of Lightning Dischargesmentioning

confidence: 99%

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Evaluation of the Direct-Stroke Shielding Performance of Substations Through Stochastic Modeling of Lightning Attachment

Ioannidis,

Tsovilis

2024

IEEE Trans. Electromagn. Compat.

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This article introduces a methodology for assessing the direct-stroke shielding performance of high-voltage substations. The proposed methodology considers both negative and positive lightning polarity and can be employed by any lightning attachment model that follows a probabilistic approach. A stochastic lightning attachment model is used, which considers the lightning discharges probabilistic progression. Stochastic model results on lightning discharge propagation, lightning attachment, and induced electric fields are in satisfactory agreement with field observations; comparisons are also made and discussed with respect to other well-established lightning attachment models. An application of the proposed methodology is performed to estimate the lightning incidence rate and shielding failure flashover rate of a 69 kV substation; the effect of lightning activity at the substation location is elucidated.

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Section: B Fractal Dimension Of Lightning Dischargesmentioning

confidence: 99%

Section: B Fractal Dimension Of Lightning Dischargesmentioning

confidence: 99%

Evaluation of the Direct-Stroke Shielding Performance of Substations Through Stochastic Modeling of Lightning Attachment

Ioannidis,

Tsovilis

2024

IEEE Trans. Electromagn. Compat.

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“…The relevant approximation adopted here consists in neglecting the actual tortuosity of the lightning channel in the computation of the fields produced by the return-stroke current [30], [31]; the lightning channel is modeled by a vertical cylinder above a PEC plane [32]. The fields are computed by the integral forms given by Rachidi et al [33].…”

Section: Field Computationmentioning

confidence: 99%

Modeling of Conductors Catenary in Power Lines: Effects on the Surge Propagation Due to Direct and Indirect Lightning

Stracqualursi,

Araneo,

Ravichandran

et al. 2023

IEEE Trans. Electromagn. Compat.

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In this article, the effects of the variable height in overhead power lines are investigated with reference to the surges produced by direct and indirect lightning events. Simulations are carried out both by an implicit finite-difference time-domain scheme and by the commercial tool EMTP-RV. Differences in the waveforms computed by the two approaches are discussed and clarified. Additionally, the validity of the commonly adopted assumption of weakly varying vertical component of the incident electric field is investigated.

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Fractal dimension analysis of lightning discharges of various types based on a comprehensive literature review

Antrias,

Ioannidis,

Tsovilis

2024

Atmospheric Research

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Analysis of the Fractal Dimension of Lightning Discharges based on a Stochastic Lightning Attachment Simulation Model

Cited by 5 publications

References 31 publications

Evaluation of the Direct-Stroke Shielding Performance of Substations Through Stochastic Modeling of Lightning Attachment

Evaluation of the Direct-Stroke Shielding Performance of Substations Through Stochastic Modeling of Lightning Attachment

Modeling of Conductors Catenary in Power Lines: Effects on the Surge Propagation Due to Direct and Indirect Lightning

Fractal dimension analysis of lightning discharges of various types based on a comprehensive literature review

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