| Title |
Measurement and Analysis of Insulation Detects of Cast-resin Transformers using Antenna |
| Authors |
최명일(Choi, Myeong-Il) ; 김재진(Kim, Jae-Jin) ; 한가람(Han, Ga-Ram) ; 전정채(Jeon, Jeong-Chay) ; 이현옥(Lee, Hyun-Ok) |
| DOI |
https://doi.org/10.5370/KIEE.2016.65.11.1937 |
| Keywords |
Cast-resin transformer ; Artificial Insulation detect ; Fault location ; Partial discharge ; Corona ; Antenna |
| Abstract |
Unlike oil immersed transformers, cast-resin transformers have the solid insulator 'epoxy resin' in sealed structure. Therefore, they reveal a lot of limitations in checking aging conditions and predicting an accident. This study analyzed the characteristics of Cast-resin transformers by the measurement distance and measurement sensitivity with a corona defect sample, using antenna sensor. Therefore, the experiment has proven that the antenna sensor-based measurement method proposed in this study is able to detect the insulation defect location of the cast-resin transformer, unlike conventional measurement methods. It is expected that the result of this study will be used to develop a new type of measuring method in order to measure insulation defects and to use in safety inspection of domestic cast-resin transformers. |