NDLI: Fractal analysis of the tree pattern and the discharge luminescence pattern

Content Provider	IEEE Xplore Digital Library
Author	Naoe, M. Ehara, Y. Kishida, H. Ito, T.
Copyright Year	1997
Description	Author affiliation: Dept. of Electr. & Electron. Eng., Musashi Inst. of Technol., Tokyo, Japan (Naoe, M.)
Abstract	The purpose of this study is to analyze the growing process of trees which generate at the pointed tip of the needle void by basing on fractal theory. In the measurement system, the PMMA blocks were using as the insulating material and the construction of electrodes was composed of a needle and a plate. For measuring section, one cycle of the applied voltage was divided into twenty areas of equal phase angle, which were named by /spl phi/1, /spl phi/2, ..., /spl phi/20 in order from the negative peak to the next negative peak of applied ac voltage. The quantitative evaluation of fractal dimension (Df) of the discharge luminescence pattern was performed for every area, particularly, for the areas of /spl phi/7, 8 and 9 where the discharge luminescence reach at around the tree tip. It was noted that some samples revealed the tree with significantly different pattern even under the same experimental condition. Then, the causes of the appearance of the different tree have been investigated by determining fractal dimension which seemed to depend on the growing process of tree. When the discharge luminescence at /spl phi/7, 8 and 9 with large Df generate, the luminescence with the complex branches generate. These results means that the discharges generated in a 7, 8 and 9 arrived to the tree tip.
Starting Page	431
Ending Page	434
File Size	342772
Page Count	4
File Format	PDF
ISBN	0780338510
DOI	10.1109/CEIDP.1997.641104
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-10-19
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fractals Pattern analysis Luminescence Trees - insulation Needles Voltage Building materials Electrodes Area measurement Phase measurement
Content Type	Text
Resource Type	Article

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