Inside the existing superconducting cables, the superconducting wire carries a loss-free current, and the cable former (the stranded copper wire) bypasses the fault current to prevent damage and loss of the superconducting cable when the fault current is applied. The fault-current-limiting-type superconducting cable proposed in this paper usually carries a steady current; but in a fault state, the cable generates self-resistance that makes the fault current lower than a certain width. That is, the superconducting cable that transmitted only a low voltage and a large capacity power repetitively limits the fault current, as does a superconducting current limiter. To complete this structure, it is essential to investigate the mutual resistance relationship between the superconducting wires after applying a fault current. Therefore, in this paper, one kinds of superconducting wires (a wire without a stabilization layer) were connected parallel 4 tapes, respectively; and after applying a fault current, the current, voltage, resistance and thermal stability of the HTS thin-film wires were examined.

When an abnormal condition occurs due to a fault current at a consumer location whereelectricity is supplied through high-Tc superconducting(HTS) cable, the HTS cable would be damaged ifthere is no appropriate method to protect it. The fault-current-limiting type HTS cable that is suggestedin this study has a structure of transport part and limit part. It conduct a zero impedance transportcurrent at ordinary operations and carry out a fault current limiting at extraordinary operations. To makea perfect this structure, it is essential to investigate electrical properties of transport part that comprisethe fault-current-limiting type HTS cable. In this paper, transport part that comprise HTS wire withcopper stabilization layer is examined the current transport properties and the stability evaluation.

When an abnormal condition occurs due to a fault current at a consumer location where electricity is supplied through a high-capacity and high-Tc superconducting(HTS) cable, the HTS cable would be damaged if there is no appropriate measure to protect it. Therefore, appropriate measures are needed to protect HTS cables. The fault-current-limiting HTS cable that was suggested in this study performs an ideal transport current function in normal operations and plays a role in limiting a fault current in abnormal operation (i.e., when a fault current is applied). It has a structure that facilitated its self-current-limiting ability through device change and reconfiguration in the existing HTS cable without extra switching equipment. To complete this structure, it is essential to investigate about the selection of the superconducting wire. Therefore, in this paper, HTS wire using two types of different stabilization layer is compared and examined the stability and current limiting properties under the existence of a fault current.