Title :
Results on aging of cellulose paper under selective conditions
Author :
Fofana, I. ; Borsi, H. ; Gockenbach, E.
Author_Institution :
Res. Group on Atmos. Icing, Quebec Univ., Chicoutimi, Que., Canada
Abstract :
The aim of this paper is to study the parameters that mostly influence the life time of high voltage transformers. It is shown that the initial moisture content of cellulose paper has a decisive role in the degradation rate, the higher the initial humidity, accelerates very strongly the degradation. The presence of oxygen, however, markedly increases the degradation rate. The influence of oxygen and moisture on the aging process of this solid insulation have been separately investigated. Their influences seem to be of the same dimension order. The presence of metallic catalysts accelerates the aging process of the cellulose papers
Keywords :
ageing; electric breakdown; humidity; impregnated insulation; life testing; moisture; oxygen; paper; power transformer insulation; AC dielectric testing; H2O; HV transformer lifetime; O influence; O2; ageing factors; aging process; cellulose paper; degradation rate; high voltage transformers; impregnated paper; initial moisture content; metallic catalysts; oxygen; solid insulation; water content; Accelerated aging; Degradation; Dielectric liquids; Dielectrics and electrical insulation; Moisture; Oil insulation; Power transformer insulation; Solids; Thermal stresses; Voltage transformers;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2001 Annual Report. Conference on
Conference_Location :
Kitchener, Ont.
Print_ISBN :
0-7803-7053-8
DOI :
10.1109/CEIDP.2001.963521
