Test results of full-scale HTS cable models and plans for a 36 kV, 2 kA sub(rms ) utility demonstration

Cable systems using High-Temperature Superconducting (HTS) tapes are nearing technical feasibility. Several large-scale demonstrations are under way. This article summarizes the advancements and status of a development project aimed at demonstrating a 36 kV, 2 kArms AC cable system through installin...

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Bibliographic Details
Published in:	IEEE transactions on applied superconductivity Vol. 11; no. 1 II; pp. 2473 - 2476
Main Authors:	Willen, D W A, Hansen, F, Rasmussen, C N, Damling, M, Schuppach, O E, Hansen, E, Baerentzen, J, Svarrer-Hansen, B, Traeholt, C, Olsen, S K, Rasmussen, C, Veje, E, Jensen, K H, Tonnesen, O, Ostergaard, J
Format:	Journal Article
Language:	English
Published:	01-03-2001
Subjects:	Air conditioning Cables Circulating Conductors Cooling systems Maintainability Superconductivity Utilities
Online Access:	Get full text
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Summary:	Cable systems using High-Temperature Superconducting (HTS) tapes are nearing technical feasibility. Several large-scale demonstrations are under way. This article summarizes the advancements and status of a development project aimed at demonstrating a 36 kV, 2 kArms AC cable system through installing a 30 m long full-scale functional model in a power utility substation. The HTS cable line is designed to link two medium-voltage transformer stations in an urban environment. The expected benefits of such a system include reduced energy loss, ease of installation, increased power rating in a small cross section, and insensitivity to the surrounding soil conditions. Results will be presented from tests on several 2 kA-class AC conductors. Electrical losses below 1 W/m at 2 kArms have been obtained in these cable conductors. The cable system consists of terminations, three HTS cables with conventional room-temperature dielectric and stress cones, and a closed-loop circulating cooling system maintaining the temperature between 74 and 84 K. Critical issues before the commercialization of this technology is the improvement of the thermal insulation, the reliability and maintainability of the cooling system, and the reduction of materials costs.
Bibliography:	SourceType-Scholarly Journals-2 ObjectType-Feature-2 ObjectType-Conference Paper-1 content type line 23 SourceType-Conference Papers & Proceedings-1 ObjectType-Article-3 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1
ISSN:	1051-8223
DOI:	10.1109/77.920364