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Title: Comparison of direct current and 50 Hz alternating current microscopic corona characteristics on conductors

Corona discharge is one of the major design factors for extra-high voltage and ultra-high voltage DC/AC transmission lines. Under different voltages, corona discharge reveals different characteristics. This paper aims at investigating DC and AC coronas on the microscopic scale. To obtain the specific characteristics of DC and AC coronas, a new measurement approach that utilizes a coaxial wire-cylinder corona cage is designed in this paper, and wires of different diameters are used in the experiment. Based on the measurements, the respective microscopic characteristics of DC and AC coronas are analyzed and compared. With differences in characteristics between DC and AC coronas proposed, this study provides useful insights into DC/AC corona discharges on transmission line applications.
Authors:
; ;  [1]
  1. State Key Lab of Power Systems, and Department of Electrical Engineering, Tsinghua University, Beijing 100084 (China)
Publication Date:
OSTI Identifier:
22304197
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 6; Other Information: (c) 2014 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; ALTERNATING CURRENT; COMPARATIVE EVALUATIONS; CORONA DISCHARGES; CYLINDERS; DESIGN; DIRECT CURRENT; ELECTRIC POTENTIAL; POWER TRANSMISSION LINES; WIRES