Current-voltage characteristics of dc corona discharges in air between coaxial cylinders

被引：32

作者：

Zheng, Yuesheng ^{[1
]}

Zhang, Bo ^{[2
]}

He, Jinliang ^{[2
]}

机构：

[1] Fuzhou Univ, Coll Elect Engn & Automat, Fuzhou 350108, Fujian Province, Peoples R China

[2] Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China

来源：

PHYSICS OF PLASMAS | 2015年 / 22卷 / 02期

基金：

中国国家自然科学基金;

关键词：

ION-FLOW FIELD; TRANSMISSION-LINES; PLASMA; HVDC;

D O I：

10.1063/1.4907234

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

This paper presents the experimental measurement and numerical analysis of the current-voltage characteristics of dc corona discharges in air between coaxial cylinders. The current-voltage characteristics for both positive and negative corona discharges were measured within a specially designed corona cage. Then the measured results were fitted by different empirical formulae and analyzed by the fluid model. The current-voltage characteristics between coaxial cylinders can be expressed as I = C(U - U-0)(m), where m is within the range 1.5-2.0, which is similar to the point-plane electrode system. The ionization region has no significant effect on the current-voltage characteristic under a low corona current, while it will affect the distribution for the negative corona under a high corona current. The surface onset fields and ion mobilities were emphatically discussed. (C) 2015 AIP Publishing LLC.

引用

页数：6