Numerical simulation and experimental validation of direct current air corona discharge under atmospheric pressure

doi:10.1088/1674-1056/21/7/075201

中国物理B ›› 2012, Vol. 21 ›› Issue (7): 75201-075201.doi: 10.1088/1674-1056/21/7/075201

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇下一篇

Numerical simulation and experimental validation of direct current air corona discharge under atmospheric pressure

刘兴华^a, 何为^a, 杨帆^a, 王虹宇^b, 廖瑞金^a, 肖汉光^a

a State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China;
b Department of Physics, Anshan Normal University, Anshan 114005, China

收稿日期:2011-10-06 修回日期:2012-02-24 出版日期:2012-06-01 发布日期:2012-06-01
基金资助:
Project supported by the National Basic Research Program of China (Grant No. 2011CB209401), the National Natural Science Foundation of China (Grant No. 51007096), and the Scientific Research Foundation of State Key Lab of Power Transmission Equipment and System Security, China (Grant No. 2007DA10512709102).

Numerical simulation and experimental validation of direct current air corona discharge under atmospheric pressure

Liu Xing-Hua(刘兴华)^a)^†, He Wei(何为)^a), Yang Fan(杨帆)^a), Wang Hong-Yu(王虹宇)^b), Liao Rui-Jin(廖瑞金)^a), and Xiao Han-Guang(肖汉光)^a)

a State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China;
b Department of Physics, Anshan Normal University, Anshan 114005, China

Received:2011-10-06 Revised:2012-02-24 Online:2012-06-01 Published:2012-06-01
Contact: Liu Xing-Hua E-mail:hua101334@gmail.com
Supported by:
Project supported by the National Basic Research Program of China (Grant No. 2011CB209401), the National Natural Science Foundation of China (Grant No. 51007096), and the Scientific Research Foundation of State Key Lab of Power Transmission Equipment and System Security, China (Grant No. 2007DA10512709102).

摘要/Abstract

摘要： Air corona discharge is one of the critical problems associated with high-voltage equipment. Investigating the corona mechanism plays a key role in enhancing the electrical insulation performance. An improved self-consistent multi-component two-dimensional plasma hybrid model is presented for the simulation of a direct current atmospheric pressure corona discharge in air. The model is based on plasma hydrodynamic and chemical models, and includes 12 species and 26 reactions. In addition, the photoionization effect is introduced into the model. The simulation on a bar-plate electrode configuration with an inter-electrode gap of 5.0 mm is carried out. The discharge voltage– current characteristics and the current density distribution predicted by the hybrid model agree with the experimental measurements. In addition, the dynamics of volume charged species generation, discharge current waveform, current density distribution at an electrode, charge density, electron temperature, and electric field variations are investigated in detail based on the model. The results indicate that the model can contribute valuable insights into the physics of an air plasma discharge.

关键词: corona discharge, hybrid model, discharge voltage--current characteristics, current density distribution

Abstract: Air corona discharge is one of the critical problems associated with high-voltage equipment. Investigating the corona mechanism plays a key role in enhancing the electrical insulation performance. An improved self-consistent multi-component two-dimensional plasma hybrid model is presented for the simulation of a direct current atmospheric pressure corona discharge in air. The model is based on plasma hydrodynamic and chemical models, and includes 12 species and 26 reactions. In addition, the photoionization effect is introduced into the model. The simulation on a bar-plate electrode configuration with an inter-electrode gap of 5.0 mm is carried out. The discharge voltage– current characteristics and the current density distribution predicted by the hybrid model agree with the experimental measurements. In addition, the dynamics of volume charged species generation, discharge current waveform, current density distribution at an electrode, charge density, electron temperature, and electric field variations are investigated in detail based on the model. The results indicate that the model can contribute valuable insights into the physics of an air plasma discharge.

Key words: corona discharge, hybrid model, discharge voltage--current characteristics, current density distribution

中图分类号: (Plasma kinetic equations)

52.25.Dg

52.65.-y (Plasma simulation) 52.80.Hc (Glow; corona) 52.40.Kh (Plasma sheaths)

刘兴华, 何为, 杨帆, 王虹宇, 廖瑞金, 肖汉光 . Numerical simulation and experimental validation of direct current air corona discharge under atmospheric pressure[J]. 中国物理B, 2012, 21(7): 75201-075201.

Liu Xing-Hua(刘兴华), He Wei(何为), Yang Fan(杨帆), Wang Hong-Yu(王虹宇), Liao Rui-Jin(廖瑞金), and Xiao Han-Guang(肖汉光) . Numerical simulation and experimental validation of direct current air corona discharge under atmospheric pressure[J]. Chin. Phys. B, 2012, 21(7): 75201-075201.

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Numerical simulation and experimental validation of direct current air corona discharge under atmospheric pressure

Numerical simulation and experimental validation of direct current air corona discharge under atmospheric pressure

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