Current Limiting Characteristics of Superconducting Fault Current Limiter for Reduction of Unsymmetrical Fault Current in a Three-Phase Power System

삼상전력계통의 비대칭고장전류 저감을 위한 초전도한류기의 전류제한특성

In this paper, the limiting characteristics of the fault current in a power system with a superconducting fault current limiter(SFCL) applied into neutral line of main transformer in a distribution power line were analyzed. The SFCL applied into the neutral line of main transformer power system can limit the unsymmetrical fault current from the single-line ground fault or the double-line ground fault. In addition, it could be decreased a number of SFCL and a load. This method could be expected to reduction of a power loss in the neutral line, because of a neutral line current is zero in ordinary times.