DocumentCode :
3355313
Title :
Correlation between temperature gradient and space charge in an oil impregnated pressboard submitted to an electric field
Author :
Mas, P. ; Touchard, G. ; Moreau, O.
Author_Institution :
Lab. d´´Etudes Aerodynamiques, Poitiers Univ., France
Volume :
2
fYear :
1999
fDate :
1999
Firstpage :
789
Abstract :
An automatic experimental setup has been performed in order to make long term experiments on oil impregnated pressboard sample submitted to both electric field and temperature gradient. The evolution, in terms of time, of the potential distribution is measured inside the impregnated pressboard sample at the application of an electric field for different temperature gradients. Four temperature gradients have been tested and three different electric fields. The space charge evolution is measured during around two hours after each temperature gradient application for a given electric field. The analyze of the charge development can then be used to understand the charge accumulation in pressboard due to flow electrification in transformer during temperature stabilization
Keywords :
electrohydrodynamics; transformer oil; automatic experimental setup; charge accumulation; charge development; electric field; electric fields; flow electrification; oil impregnated pressboard; potential distribution; space charge; space charge evolution; temperature gradient; temperature gradients; temperature stabilization; transformer; Breakdown voltage; Electric breakdown; Electric variables measurement; Oil insulation; Partial discharges; Petroleum; Power transformer insulation; Power transformers; Space charge; Temperature;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1999 Annual Report Conference on
Conference_Location :
Austin, TX
Print_ISBN :
0-7803-5414-1
Type :
conf
DOI :
10.1109/CEIDP.1999.807923
Filename :
807923
Link To Document :
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