| Title |
Degradation Diagnosis of Insulation Paper Using CO and CO_2 Gases in Oil Immersed Transformers |
| Authors |
선종호(Sun Jong-Ho) ; 이상화(Yi Sang-Hwa) ; 김광화(Kim Kwang-Hwa) |
| Keywords |
Oil Immersed Transformers ; Gas Dissloved Analysis ; Cellulosic Insulations |
| Abstract |
Faults of cellulosic insulations greatly affect the life span of oil immersed transformers because their performance recovery is impossible. Therefore, the reliable diagnosis technologies are needed for detection of the faults. Dissolved gas analysis technologies using CO and CO_2 gases have been widely used for fault diagnosis of cellulosic insulations. In this research, we described Degradation diagnosis of insulation paper CO and CO_2 gases in oil immersed Transformers using. We considered the distribution characteristics of CO, CO_2 gases' concentrations and ratios of CO_2/CO not only in serviced transformers but in experiments with typical fault causes such as heat, partial discharge and moisture. As result, the reliability of diagnosis results for the cellulosic insulations can be improved when the concentrations of CO, CO_2 and the ratio of CO/CO_2 satisfy each diagnosis criterion at a tim |