| 摘要 |
<p>Provided is a superconducting cable which can conduct a large current by utilizing the longitudinal magnetic field effect, and which enables a current-limiting function to be achieved in the cable itself in the case of excess current. This superconducting cable (1) includes an inner conductor (3) that conducts a direct current by utilizing the longitudinal magnetic field effect, and a shield layer (5) that conducts a direct current in the opposite direction to that of the inner conductor so as to increase the longitudinal magnetic field of the inner conductor (3). The current capacity of the shield layer (5) is smaller than the current capacity of the inner conductor (3). The shield layer (5) includes an outer conductive layer (6b) for shunting current if the current flowing through the shield layer (5) exceeds the current capacity of the shield layer (5). The inner conductor (3) includes an inner conductive layer (6a) for shunting current if the current flowing through the inner conductor (3) exceeds the current capacity of the inner conductor (3). The outer conductive layer (6b) and the inner conductive layer (6a) are formed such that, if current is conducted to the outer conductive layer (6b) and the inner conductive layer (6a), the longitudinal magnetic field is reduced by said current.</p> |
