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

Abstract

Numerical simulation and experimental validation of a 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)

Numerical Simulation of the Characteristics of Electrons in Bar-plate DC Negative Corona Discharge Based on a Plasma Chemical Model

“…A two-dimensional physical model proposed by Pancheshnyi et al [18] for discharge in N 2 -O 2 (9:1) mixed gas under 760 Torr was improved based on the selection of 10 kinds of primary particles from Nahomy's model, which was further employed to analyze electric field distribution, densities of charged particles, reaction rates and other discharge parameters, and the obtained results fairly correspond to the experimental data. Liu et al [19,20] established a fluid-chemical mixed kinetic model for corona discharge under atmospheric pressure and the computed V-I curve and electron temperature curve accorded well with the experiment values carried by Antao [21]. Based on this model, current density, electron density, and positive/negative ion densities distribution are discussed.…”

“…The essence of air discharge is regarded as collision between charged particles and neutral air molecules (atoms), molecules (atoms) clusters and other basic particles, as well as results of the collision between these particles and electrode surfaces [19]. The reaction pathways are adopted primarily from the mechanism of Pancheshnyi [18].…”

Charging and absorption characteristics of small particulates under alternative and electrostatic voltages in an electrostatic precipitator

“…[7] If the dust has a relatively high resistivity, the charge is not easily released. [8] With the thickening of the staubosphere in the collecting electrode, the surface charge of the staubosphere will gradually increase. When the potential difference is larger than the breakdown voltage formed by the dust, the staubosphere will generate a partial breakdown, and resulting in the anti-corona phenomenon.…”

A Novel Analytical Expressions Model for Corona Currents Based on Curve Fitting Method Using Artificial Neural Network

“…For a long time, these discharges often bring in eventual failure within insulators and electrical plant items such as power transformers and gas insulated switchgear [1]. In order to indicate and monitor these incipient discharges within the electrical system on-line, a number of measurement techniques have been developed, including acoustic, chemical, optical and electrical techniques.…”