Superconducting graphene composite cable

Abstract

The invention relates to a superconducting graphene composite cable comprising an inner support tube core, a graphene layer, a superconductor layer, a heat insulation layer, an electrical insulation layer, a superconducting shield layer, and a protective layer. One side of the graphene layer is connected with the outer side of the inner support tube core with circulating liquid nitrogen, and the other side of the graphene layer is connected with the superconductor layer, thus forming a graphene composite superconducting collaborative structure. The types of the superconducting graphene composite cable comprise a low-temperature superconducting graphene composite cable and a high-temperature superconducting graphene composite cable. The superconducting graphene composite cable can be a single-phase cold-insulation high-temperature superconducting graphene composite cable, a single-phase hot-insulation high-temperature superconducting graphene composite cable, a three-phase parallel-axis cold-insulation high-temperature superconducting graphene composite cable, or a three-phase coaxial cold-insulation high-temperature superconducting graphene composite cable.

Description

technical field [0001] The invention belongs to the field of power transmission systems, and relates to a superconducting cable, and more particularly to a superconducting graphene composite cable. Background technique [0002] With the rapid development of the national economy, people's demand for electric energy continues to grow. Traditional power supply methods and systems are difficult to meet people's needs. It is very urgent to improve the power transmission capacity. At present, the transmission density and transmission capacity of the power grid are gradually increasing, but there are some problems in large-capacity transmission, such as: occupying a large space, causing certain electromagnetic pollution to the surrounding environment and other series of problems. The development, popularization and application of superconducting cables have outstanding advantages, such as: large transmission capacity, high power density, small size, light weight, low transmission l...

AI Technical Summary

Problems solved by technology

In view of the complexity of the superconducting cable system, the relatively harsh operating conditions, and the rapid development of quenching, the superconducting cables with traditional structures obviously have problems such as weak effective resistance and weak ability to withstand fault current impacts; the current superconducting cables still have There are instability problems. These unstable factors are closely related to electromagnetic disturbances and mechanical disturbances, and are also related to certain defects in the current structure design of superconducting cables. In the past, in order to improve the stability of superconducting cables, people used superconductor coating A large amount of normally conductive metal technology consumes a lot of normally conductive metal; because the rapid heat transfer and shunting current are often related to the contact area and orientation of the normally conductive metal, the thermal conductivity and electrical conductivity of the normally conductive metal, and the used normally The type of conductive metal material is related to the amount used, as well as the method of using normal conductive metal materials. Therefore, the current structure and technology of superconducting cables still face a series of defects that need to be solved and overcome.

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