| Title |
Estimating for Properties of Insulating Degradation for Cellulose paper with Aging Temperature and Correlation by Statistical Treatment |
| Authors |
김재훈(Kim, Jae-Hoon) ; 김대식(Kim, Dae-Sik) ; 한상옥(Han, Sang-Ok) |
| Keywords |
Cellulose ; Chemical Characteristics ; DGA ; HPLC ; Correlation ; Statistical treatment |
| Abstract |
It was known that oil-filled transformer's life depended on insulating paper which was applied to transformers for insulating of transformer. Therefore when paper was aged, its electrical, mechanical and chemical characteristics were changed. Especially if operating temperature was high, paper was quickly damaged. As cellulose paper which was mainly used for solid insulation of transformers was degraded, the cellulose polymer chains broke down into shorter lengths and gases such as CO, CO_2, CH_4, C_2H_4 and so on were produced from paper. Also by-product known as furan compounds were producted from paper and it were dissolved within insulating oil. In this paper accelerating aging cell was aged during 60 hours at 100, 150, 180 and 200°C, respectively, so evaluating the chemical characteristics of cellulose paper by thermal. An it were performed analysis such as tensile strength(TS), dissolved gas analysis(DGA) and high performance liquid chromatography(HPLC). Also for analyzing of correlation between insulating degradation characteristics, it was performed linear regression method as statistical treatment. |