Designing System of Dc Superconducting Cable

A designing system for designing a DC superconducting cable comprising a conductor layer and an outer-conductor layer arranged outside the conductor layer through an electrical insulation layer, the designing system being capable of calculating a winding diameter and a winding pitch of superconducting wires to constitute the conductor layer and the outer-conductor layer, the designing system comprising:

• a:
• First correlation-calculation means for calculating the relationship between a ratio Xf and a contraction amount Cf, the ratio Xf being a ratio between the winding diameter and the winding pitch of a superconducting wire constituting the conductor layer, and the contraction amount Cf being capable of absorbing the thermal contraction of the superconducting wire due to cooling;
• b:
• Second correlation-calculation means for calculating the relationship between the ratio Xf and a use quantity ratio Ufx of the superconducting wire in the conductor layer per unit length of the cable;
• and
• c:
• First selection means for extracting, from the calculation results of said First correlation-calculation means and said Second correlation-calculation means, data of the winding diameter and the winding pitch of the superconducting wire, the data enabling satisfying a given contraction amount Cfs and the use quantity ratio Ufxs of the superconducting wire.