Nkt Cables Group A/s

Nkt Cables Ultera A/s

Nkt Gmbh & Co. Kg

Dag Willén

Carsten Thidemann

Mark Roden

Chresten Traeholt

Jerry C Tolbert

David Lindsay

Manfred Däumling

Martin Pitzer

Chresten Træholt

A superconducting power cable system, including: a superconducting power cable including a cryostat, a first cooling station, a second cooling station, wherein the superconducting power cable extends between the first cooling station and the second cooling station, wherein the first cooling station is configured to pump cooling fluid into the cryostat in a first direction towards the second cooling station and the second cooling station is configured to pump cooling fluid into the cryostat in a second direction, opposite to the first direction, towards the first cooling station, an access pipe assembly arranged between the first cooling station and the second cooling station, the access pipe assembly extending into the cryostat for tapping cooling fluid flowing from the first cooling station and the second cooling station from the cryostat, and a return pipe structure arranged externally to the superconducting power cable, the return pipe structure connecting the access pipe assembly to the first cooling station and to the second cooling station, and providing a respective return cooling fluid line from the cryostat through the access pipe assembly to the first cooling station and to the second cooling station.

Superconducting power cable system

A superconducting power cable having: a former including: an axially stretchable core, and a plurality of elongated outer elements wound helically around the core, wherein the core includes a first material and the elongated outer elements include a second material thermally contracting less than the first material at the operating temperature of the superconducting power cable; and a superconducting conductor layer arranged around the former.

Superconducting power cable

The invention relates to a superconductive multi-phase, fluid-cooled cable system comprising a) a cable comprising at least three electrical conductors constituting at least two electrical phases and a zero- or neutral conductor, said electrical conductors being mutually electrically insulated from each other, and b) a thermal insulation defining a central longitudinal axis and having an inner surface and surrounding the cable, said inner surface of said thermal insulation forming the radial limitation of a cooling chamber for holding a cooling fluid for cooling said electrical conductors. The invention further relates to a method of manufacturing a cable system and to its use. The object of the present invention is to provide a simplified manufacturing and installation scheme for a fluid cooled cable system. The problem is solved in that said cable&#x2014;at least over a part of its length&#x2014;is located eccentrically relative to said central longitudinal axis when viewed in a cross section perpendicular to said longitudinal axis and where the eccentric location has the function of accommodating thermal shrinkage and expansion of the cable with respect to the thermal insulation.

Superconductive multi-phase cable system, a method of its manufacture and its use

A superconducting cable comprises N phases. Each phase comprises a number of superconducting phase conductors classified into N-phase groups. Each N-phase group comprises a phase conductor from each of the N different phases, where N is greater than one, and the number of N-phase groups is larger than or equal to two. Insulation is arranged in the cable around each phase conductor or between assemblies of phase conductors, so that said N-phase groups are insulated from each other. One or more of the N-phase groups or assemblies of N-phase groups is provided with a common electrically conductive screen. The N-phase groups are arranged in a number of coaxial groups comprising at least two coaxial layers and having a common axis oriented along the length of the cable. The superconducting cable has fewer cooling channels for refrigerant than phase conductors.

Superconducting multiphase cable comprising N phases and method of constructing the cable

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Klagshamn, Sweden

Dag Willén