Mobile QR Code QR CODE : The Transactions of the Korean Institute of Electrical Engineers
Title The Correlation Evaluation through Furan Analysis of Life-time for 22.9kV Oil-immersed Transformer
Authors 김영석(Young-Seok Kim) ; 황민(Min Hwang) ; 조기룡(Gi-Ryong Jo)
DOI https://doi.org/10.5370/KIEE.2021.70.11.1759
Page pp.1759-1764
ISSN 1975-8359
Keywords Oil-immersed transformer; Furan; Life-time; Acceleration deterioration; Insulation paper
Abstract To prevent accidents through maintenance and appropriate replacement of oil-immersed transformer, the correlation between the life-time of the transformer was estimated by comparing the furan analysis of the insulation paper according to the accelerated deterioration and the insulating oil. According to accelerated deterioration, the furan value of DDP was reduced to about 1/1000 compared to that of Kraft paper, and it was shown that the thermal properties were excellent by the epoxy coating. As a result of the analysis of the degree of polymerization of the insulating paper, when the furan value was about 200 ppb, it was determined that the paper performance was lowered. Although the number of transformers collected is small, the life-time of the oil-immersed transformer is about 37 years.