Study of Formation and Propagation of Streamers in SF<sub>6</sub> and Its Gas Mixtures with Low Content of SF<sub>6</sub> Using a One-Dimensional Fluid Model

LI Fuliang (李付亮); WANG Feng(汪沨); WANG Guoli(王国利); W. PFEIFFER; He Rongtao(何荣涛)

doi:10.1088/1009-0630/14/3/02

Plasma Science and Technology > 2012 > 14(3): 187-191. > DOI: 10.1088/1009-0630/14/3/02

LI Fuliang (李付亮), WANG Feng(汪沨), WANG Guoli(王国利), W. PFEIFFER, He Rongtao(何荣涛). Study of Formation and Propagation of Streamers in SF₆ and Its Gas Mixtures with Low Content of SF₆ Using a One-Dimensional Fluid Model[J]. Plasma Science and Technology, 2012, 14(3): 187-191. DOI: 10.1088/1009-0630/14/3/02

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Study of Formation and Propagation of Streamers in SF₆ and Its Gas Mixtures with Low Content of SF₆ Using a One-Dimensional Fluid Model

1.
Hunan Technical College of Water Resources and Hydropower, Changsha 410131, China
2.
School of Electrical and Information Engineering, Hunan University, Changsha 410082, China
3.
Technische Universität Darmstadt, 64283 Darmstadt, Germany
4.
XuJi (Xiamen) Intelligent Switchgear Manufacturing Co., Ltd., Xiamen 361101 China

Funds: Supported by Program for New Century Excellent Talents in University of China, Program of National Engineering Laboratary for Ultra High Voltage Engineering Technology of China

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Received Date: January 13, 2011

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Abstract

Abstract

Using a hybrid Monte Carlo Collision/Fluid model, the formation and propagation of streamers in SF₆ and its gas mixtures are simulated. The simulation is based on an accurate numerical solution of Poisson’s equation in conjunction with the continuity fluid equation for electrons, negative ions, and positive ions. The factors that influence the formation and propagation of streamers are investigated. The electron density, positive and negative ion density, and electric field in the discharge channel are also presented, which are very important in understanding the phenomena of streamers and in assessing the insulation strength of the gas mixture.
- streamer,
- fluid,
- SF₆,
- insulation

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