Line fault test of model power system with three‐phase superconducting fault current‐limiting reactors

A novel three-phase conducting fault current limiting reactor (SCFCLR) is fabricated. The SCFCLR has three superconducting windings with the same number of turns wound on an iron core. The rating of SCFCLR is 200 V, 10 A. Two SCFCLRs are inserted in the sending and the receiving ends of the model power-transmission line. The line fault test of a model power system with two SCFCLRs is undertaken. The fundamental behavior of this reactor is confirmed. In the case of single-line-to-ground fault, the fault current is limited to a very small value by the large zero-phase sequence reactance of the SCFCLR without quench. In the case of a three-phase short circuit, the SCFCLR quenches, and the short-circuit current is limited by the normal conducting resitance of the winding. It is confirmed that the transient stability of the system during line faults is greatly improved by the insertion of SCFCLRs.