DocumentCode :
1146911
Title :
Impact of corona on the long-term performance of nonceramic insulators
Author :
Moreno, V.M. ; Gorur, R.
Author_Institution :
Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA
Volume :
11
Issue :
5
fYear :
2004
Firstpage :
913
Lastpage :
915
Abstract :
This work discusses with the impact of corona on the long-term performance of nonceramic insulators. The aging mechanism of insulating materials and the partial discharges measurement (PD) on insulating materials is also discussed. In this measurement the rise of surface temperature of some solid insulating materials during activity of corona in point-dielectric-plain electrode arrangement by means of noncontact infrared (IR) measuring system. As the method measures the mean temperature of the sample surface, it is important to keep the diameter of the measuring target, in a given electrode arrangement, as small as possible. The smallest spot diameter of the sensor was 2.5 mm. The measurements made in the same electrode arrangements but with another IR camera proved that the spot diameter is even smaller than 2.5 mm. It means that the actual surface temperature is higher than indicated one.
Keywords :
ageing; corona; electrodes; infrared imaging; insulating materials; insulators; partial discharge measurement; temperature measurement; IR camera; PD; aging mechanism; corona; nonceramic insulators; noncontact infrared measuring system; partial discharges measurement; point-dielectric-plain electrode; solid insulating materials; surface temperature measurement; Aging; Cameras; Corona; Electrodes; Insulation; Partial discharges; Solids; Surface discharges; Temperature measurement; Temperature sensors;
fLanguage :
English
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
Publisher :
ieee
ISSN :
1070-9878
Type :
jour
DOI :
10.1109/TDEI.2004.1349798
Filename :
1349798
Link To Document :
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