NDLI: 3D Channel tortuosity of long air gap discharge

Content Provider	IEEE Xplore Digital Library
Author	Shanqiang Gu Nianwen Xiang Jiahong Chen Weijiang Chen Shijun Xie Junjia He
Copyright Year	2011
Description	Author affiliation: State Grid Corporation of China, Beijing 100031, China (Weijiang Chen) \|\| The State Key Laboratory of Advanced Electromagnetic, Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China (Shijun Xie; Junjia He) \|\| The State Grid Electric Power Research Institute, Wuhan 430074, China (Shanqiang Gu; Nianwen Xiang; Jiahong Chen)
Abstract	The geometric form of the leader trajectory is an interesting aspect of long air gap discharge research. In this paper, the 3-D discharge channel tortuosity in 3m rod-plane gaps is obtained by following steps: Firstly, using two static cameras fixed orthogonally to record the face photo and the side photo of the discharge channel. Secondly, the 3-D discharge channel is reconstructed by employing image recognition technology. Thirdly, the discharge channel tortuosity in two-dimensional space and three-dimensional space are derived respectively, which satisfied the Gaussian distribution law. The statistical results indicate that the channel tortuosity will be conservatively estimated by using a two-dimensional method. Statistical results of the channel tortuosity with three-dimensional method indicate the following conclusions. The angle between the discharge channel segments and the gap axis meets the distribution of rational function and its average value and standard deviation is 23.8°and ±19.0°respectively; the angle between the adjacent channel segments also meets the distribution of rational function, and its average value and standard deviation is 13.3°and ±9.9°.
Starting Page	784
Ending Page	787
File Size	548385
Page Count	4
File Format	PDF
ISBN	9781457714672
e-ISBN	9781457714665
DOI	10.1109/APL.2011.6110233
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-11-01
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Discharge channel Positive Discharges Probability Cameras Time frequency analysis Three-dimensional characteristics Sparks Face Switching impulse Rod-plane air gap Image reconstruction
Content Type	Text
Resource Type	Article

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