Numerical simulation transient electron distribution of direct current negative corona discharge in air

International Symposium on Resource Exploration and Environmental Science

地球科学;生态环境科学

Liu, Xinghua^1 ; Xian, Richang^2 ; Yu, Peng^3 ; Pei, Ying^4 ; Lv, Xuebin^5 ; Sun, Xuefeng^1 ; Wang, Tao^1 ; Ning, Shangyuan^1 ; Wang, Shikun^1

State Grid Zibo Power Supply Company, Shandong

255000, China^1

Shandong University of Science and Technology, Shandong

255000, China^2

State Grid Shandong Electric Power Research Institute, Shandong

255000, China^3

State Grid of China Technology College, Shandong

255000, China^4

State Grid Shandong Power Company, Shandong

255000, China^5

关键词: Conservation equations;    DC negative corona discharge;    Electron distributions;    Electron mean energy;    Interelectrode gaps;    Multi-component diffusion;    Negative corona discharges;    Numerical computations;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/64/1/012102/pdf
DOI  :  10.1088/1755-1315/64/1/012102

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In order to explore the characteristics of electron in DC negative corona discharge, microcosmic process of negative corona discharge in air is simulated in this paper. The numerical computation is established with a bar-plate electrode configuration with an inter-electrode gap of 3.3 mm, the negative DC voltage applied to the bar is 5.0 kV, the pressure in air discharge is fixed at 1.0 atm, and the gas temperature is assumed to be a constant (300 K). By solution the system of electron conservation equation, the electron mean energy conservation, the heavy species multi-component diffusion transport equation, and the Poisson's equation, characteristics of electrons (electron mean energy, electron density, and generation and dissipation performances of electrons) at 6 representative time points during a pulse are obtained and then discussed emphatically.