| Title |
Stabilized Operating Conditions of Superconducting Fault Current Limiter using YBCO Thin Film |
| Authors |
최효상(Choe, Hyo-Sang) ; 김혜림(Kim, Hye-Rim) ; 현옥배(Hyeon, Ok-Bae) |
| Keywords |
Superconducting fault current limiter ; YBCO thin film ; Quench completion time ; Reproducible quench |
| Abstract |
We fabricated resistive superconducting fault current limiters (SFCL) based on YBCO thin films grown on a 2-inch diameter Al2O3 substrate. The current limiting element was 1 mm wide and 260mm long meander line prepared by standard photolithography. The minimum quench current of the current limiting element was about 8 Apeak. This SFCL sucessfully controlled the fault current below 14.3 Apeak at the voltage of 100 Apeak which is otherwise to increase up to 141 Apeak. The quench completion time was less than 3 msec. The temperature of the current limiting element rose to about 200 K in 3 cycles after fault. The SFCL showed reproducible quench during hundreds times of repeated experiments. |