An EMTDC Simulation for a Superconducting Fault Current Limiter in the Line-to-Line Fault

선간단락 사고에 대한 초전도 한류기의 EMTDC 해석

We have performed an EMTDC simulation for the current limiting effects of a superconducting fault current limiter (SFCL) for the 154 kV transmission line between the Gaepo and Sungnam substations. The simulation showed that a line-to-line fault increases the fault current up to 54 kA. The SFCL with $100{\Omega}$ impedance after quench limited the current to 15 kA within a half cycle. This limited current is well below the upper limit of a circuit breaker, suggesting that the impedance of the SFCL in the transmission line is sufficient.