| 摘要 |
<p>A superconducting cable having a smaller outside diameter and a DC power transmission method utilizing this superconducting cable. The superconducting cable (1) comprises two stranded cable cores (2) each having a superconductor layer (4) of a superconducting material and an external superconducting layer (6) and contained in a heat insulating pipe (8). Each cable core (2) consists of a former (3), the superconductor layer (4), an insulating layer (5), the external superconducting layer (6), and a protective layer (7) arranged sequentially from the center. In the case of unipolar transmission, the superconductor layers (4) provided to both cores (2) are fed with an unipolar current and used as a supply line and the external superconducting layers (6) provided to both cores (2) are fed with a return current and used as a return line. In the case of bipolar transmission, the superconductor layer (4) provided to one core (2) is used for positive pole transmission, the superconductor layer (4) provided to the other core (3) is used for negative pole transmission, and the external superconducting layers (6) of both cores (2) are used as a neutral line layer.</p> |
