Characterization of streamer patterns in insulating vegetable oil subjected under impulse voltages by fractal analysis

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A. YOUSFI, B. ZEGNINI

Abstract. This paper presents the variation of fractal dimension with final stopping lengths and different applied voltage. This investigation deals mainly with the fractal properties of 2D (Dimension) patterns of real propagating streamers obtained in insulating vegetable oil. The streamer patterns are generated experimentally under impulse voltages. Simulation program is used to calculate the fractal dimension for experimentally obtained sequence of initiation and propagation of streamers in vegetable oil by using box counting method. It is found that fractal dimension is a function of magnitude of the voltage, polarity of the voltage. Fractal analysis is a good and suitable tool for the analysis of streamers initiation and propagation in insulating vegetable oil used in transformers.

Keywords
Fractal Dimension, Box Counting Method, Pattern, Insulating Vegetable Oil, Power Transformer, Impulse Voltage

Published online 12/10/2016, 4 pages
Copyright © 2016 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: A. YOUSFI, B. ZEGNINI, ‘Characterization of streamer patterns in insulating vegetable oil subjected under impulse voltages by fractal analysis’, Materials Research Proceedings, Vol. 1, pp 110-113, 2016
DOI: http://dx.doi.org/10.21741/9781945291197-28

The article was published as article 28 of the book Dielectric Materials and Applications

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