| Title |
Analysis Operating Characteristics of Matrix-Type Superconducting Fault Current Limiter in Ground Faults of Power Grid |
| Authors |
Guem-Kon Oh ; Yong-Sun Cho ; Hyo-Sang Cho ; Sung-Bo Oh ; Deog-Goo Kim |
| Keywords |
Flux-Lock Type SFCL ; Fault Current Limiting ; Recovery ; Consumed Energy |
| Abstract |
It is very important for power stability to suppress the excessive fault current happened frequently in the real power grid. The superconducting fault current limiter (SFCL) is one of the most effective ways to reduce the fault current among the facilities developed so far. In this paper, we have investigated the operating characteristics of the power grid with the SFCL according to three types such as the single, double and triple line-to-ground faults. In addition, we analyzed the consumption power of the superconducting units based on the working data of the SFCL. We confirmed that the fault current could be limited lower than its peak value to 85 percentage in initial fault condition and to 95 percentage after one cycle in the matrix-type SFCL. The consumption powers of the superconducting units were almost equal by reduction of the difference of the critical current between superconducting units element. |