Fault Current Limiting Characteristics of Series Connected Flux-Lock Type Superconducting Fault Current Limiters

직렬연결된 자속구속형 초전도 사고전류 제한기의 사고전류제한 특성

To apply the flux-lock type SFCL into power system, its current and voltage ratings are required to increase. Especially, in case of series connection of SFCLs, the countermeasure for simultaneous quenches must be considered. The structure, which each flux-lock type SFCL unit was wound in series on the same iron core, can induce the simultaneous quench of superconducting elements. Through the fault current limiting experiment for the suggested structure, it was confirmed that the even voltage burden among the superconducting elements comprising SFCLs could be made.