RECOVERY-TIME OF SUPERCONDUCTING NONINDUCTIVE REACTOR TYPE FAULT CURRENT LIMITER

A superconducting fault current limiting device for electric power sys tems has been investigated to find out its feasibility. Nea-inductive reactor type fault current limiter has been constructed using metal su perconductor. Two bifilar wound solenoids were connected in antiparall el or antiseries. On each connection, the fault current limiting test was performed by short-circuiting a resistive load suddenly. The recov ery (normal-to-superconductive state transition) time after the curren t limiting mode has been studied using small scale model of fault curr ent limiter for the low voltage distribution line. The results reveal that the current limiter could be operated under repetitive fault curr ent accident which was removed within a few cycle of the limiting mode . The recovery time is a function of the dissipated energy under curre nt limiting made. Test results are presented.