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An experimental and numerical study of leader development in rod-rod gaps under positive switching impulse voltage

Published online by Cambridge University Press:  25 October 2013

Yaoheng Xie*
Affiliation:
The State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, P.R. China
Hengxin He
Affiliation:
The State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, P.R. China
Chuanqi Wu
Affiliation:
The State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, P.R. China
Junjia He
Affiliation:
The State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, P.R. China
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Abstract

The main form of electrical discharge in long air gaps is broken down by leader mechanism. The leader development in rod-rod gaps under positive switching impulse was investigated by using two high-speed CCD cameras. The clearer and more particular colorized physical morphology of the leader propagation process than the traditional image converter cameras was recorded and the leader development parameters were also obtained. As a comparative study, an improved simplified model for rod-rod configuration was performed to simulate the leader development. The numerical simulations of leader development characteristics were in a close agreement with that of experimental measurements.

Type
Research Article
Copyright
© EDP Sciences, 2013

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