직렬연결된 두 코일의 자기결합을 이용한 초전도 사고전류제한기의 사고전류제한 특성 컴퓨터 시뮬레이션 분석

Computer Simulation Analysis on Fault Current Limiting Characteristics of SFCL using Magnetic Coupling of Two Coils with Series Connection

The computer simulation for the fault current limiting characteristics of the superconducting fault current limiter (SFCL) using the magnetic coupling of two coils was performed. The magnetic fluxes generated from two coils were canceled out during a normal time. However, the resistance generation of high-$T_c$ superconducting (HTSC) element after a fault occurrence keeps up the magnetic fluxes of two coils and contributes to the fault current limiting operation. Through the computer simulation for the fault current limiting characteristics based on its electrical equivalent circuit, its operational current and the limiting impedance could be improved by adjusting the inductance ratio between two coils.