{"title":"Influence of paper insulation on acceptable gas-in-oil levels in transformers","authors":"M. Duval, F. Langdeau, P. Gervais, G. Bélanger","doi":"10.1109/CEIDP.1989.69572","DOIUrl":null,"url":null,"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.<<ETX>>","PeriodicalId":10719,"journal":{"name":"Conference on Electrical Insulation and Dielectric Phenomena,","volume":"27 1","pages":"358-362"},"PeriodicalIF":0.0000,"publicationDate":"1989-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"13","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Conference on Electrical Insulation and Dielectric Phenomena,","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CEIDP.1989.69572","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 13
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.<>
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