skip to main content

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

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{sub 0}){sup 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.
Authors:
 [1] ; ;  [2]
  1. College of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350108, Fujian Province (China)
  2. Department of Electrical Engineering, Tsinghua University, Beijing 100084 (China)
Publication Date:
OSTI Identifier:
22408141
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; AIR; CORONA DISCHARGES; CYLINDERS; ELECTRIC CURRENTS; ELECTRIC POTENTIAL; ELECTRODES; ION MOBILITY; NUMERICAL ANALYSIS