Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/21381
Title: Positive corona in air using a point/cup electrode system
Authors: MacAlpine, JMK
Li, E
Keywords: Corona
Onset voltages
Positive corona
Space charge
Issue Date: 2003
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on dielectrics and electrical insulation, 2003, v. 10, no. 2, p. 307-311 How to cite?
Journal: IEEE transactions on dielectrics and electrical insulation 
Abstract: The authors recently published some measurements of negative corona currents in air using a spherically-symmetric point/cup electrode system, and also the related simulations. In this paper the corresponding current/voltage measurements and simulations for positive-point corona, again using the highly symmetric electrode system, are described. Although the corona onset voltages are again predicted with reasonable accuracy for different point radii and air pressures, the currents are very much lower, presumably due to the effect of positive space charge accumulating close to the point electrode (since the simulations assume the absence of space charges). In agreement with this assumption, the streamer pulses are only seen at or just above the onset voltage. Only avalanches occur from about 1 kV above the onset voltage.
URI: http://hdl.handle.net/10397/21381
ISSN: 1070-9878
EISSN: 1558-4135
DOI: 10.1109/TDEI.2003.1194116
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