| Title |
Dielectric Breakdown Voltage According to Flow Velocity and Temperature of Vegetable Oils |
| Authors |
최순호(Choi, Sun-Ho) ; 허창수(Huh, Chang-Su) |
| DOI |
https://doi.org/10.5370/KIEE.2012.61.6.821 |
| Keywords |
Vegetable insulating oils ; Dielectric breakdown voltage ; Charging device |
| Abstract |
The streaming electrification process of vegetable insulating oils occurring when the oils contacted with solid material in a high power transformer circulation system seems to cause electrical discharge incidents and may cause failures. We therefore measured the dielectric breakdown voltage tendency of vegetable insulating oils flowing on the surface of the charging device with various velocity and temperature. First, the relation between the velocity and breakdown voltage tendency of vegetable oils, can be explained by volume effect and v-t effect. Second, experimental results show that applied voltage have little effect on dielectric breakdown voltage, when vegetable insulating oils used for large power transformer. |