Fractal dimensions analysis of branching streamers propagating in mineral oil

This article deals with the analysis of the fractal dimension of streamers propagating in mineral oil, under lightning impulse voltage, using the box counting method; the method and technique of calculation are described therein. In the considered experimental conditions, the average velocities of r...

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Bibliographic Details
Published inArchives of Electrical Engineering (Online) Vol. 71; no. 3; pp. 659 - 669
Main Authors Dang, Viet-Hung, Beroual, Abderrahmane, Rozga, Pawel
Format Journal Article
LanguageEnglish
Published Warsaw Polish Academy of Sciences 01.01.2022
Subjects
Electric fields
Electric power
Electrodes
Engineering Sciences
Fractal analysis
Fractal geometry
Fractals
lightning impulse voltage
mineral oil
Mineral oils
Photography
Propagation modes
Registration
Stochastic models
streamers
Velocity
mineral oil
lightning impulse voltage
fractal analysis
streamers
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Summary:This article deals with the analysis of the fractal dimension of streamers propagating in mineral oil, under lightning impulse voltage, using the box counting method; the method and technique of calculation are described therein. In the considered experimental conditions, the average velocities of recorded streamers are of 2.4 km/s and 1.8 km/s for positive and negative streamers, respectively; these velocities correspond to the 2nd mode of streamers propagation. It is shown that the streamers present the fractal dimension D ; and the higher D is the bushier are the streamers (i.e. with high branch density). The positive streamers can have higher D than the negative ones, if they are bushier.
ISSN:1427-4221
2300-2506
DOI:10.24425/aee.2022.141677