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.
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页数：6
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