NDLI: Influence of paper insulation on acceptable gas-in-oil levels in transformers

Content Provider	IEEE Xplore Digital Library
Author	Duval, M. Langdeau, F. Gervais, P. Belanger, G.
Copyright Year	1989
Description	Author affiliation: Hydro-Quebec, Varennes, Que., Canada (Duval, M.; Langdeau, F.; Gervais, P.; Belanger, G.)
Abstract	The influence of cellulose on acceptable gas-in-oil levels in high-voltage transformers as indicated by the value of the CO/sub 2//CO ratio is assessed by means of dissolved-gas analysis. The results presented here are based on 6932 gas-in-oil analyses on 1320 Hydro-Quebec transformers over a period of 20 years. Preliminary results indicate that C/sub 2/H/sub 4/ levels are affected by cellulose participation for both arcing and hot spots. The effect can be felt starting from CO/sub 2//CO ratios <6 for arcing and <2 for hot spots. These results suggest that the acceptable and dangerous levels of dissolved C/sub 2/H/sub 4/ in power transformers must be greatly reduced as the CO/sub 2//CO ratio in the oil decreases.<>
Starting Page	358
Ending Page	362
File Size	184891
Page Count	5
File Format	PDF
DOI	10.1109/CEIDP.1989.69572
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1989-10-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Gas insulation Power transformer insulation Dissolved gas analysis Power transformers Hydrogen Gases Corona Petroleum Fault detection Fault diagnosis
Content Type	Text
Resource Type	Article

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Influence of paper insulation on acceptable gas-in-oil levels in transformers