Testing of a liquid nitrogen cooled 5-meter, 3000 a tri-axial high temperature superconducting cable system

J. A. Demko, R. C. Duckworth, P. W. Fisher, M. J. Gouge, C. M. Rey, M. A. Young, D. Lindsay, M. Roden, J. Tolbert, D. Willen, C. Træholt, C. Thidemann

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

The tri-axial HTS cable design uses three concentric superconducting layers for the phase conductors separated by a cold dielectric material. It offers an efficient HTS cable configuration by reducing the amount of superconductor needed, and placing all three phases in a single cryostat. Ultera and ORNL tested a 5-meter long tri-axial HTS cable and terminations designed to operate at 3 kA ac and 13.2 kV. Test results, including the thermal loads on the system, will be reported. An existing liquid nitrogen skid that circulates subcooled liquid nitrogen through the cable was initially designed for the heat loads on single phase cables at lower current ratings. The refrigeration needed for the 3 kA tri-axial cable configuration made it necessary to upgrade the nitrogen system to increase the cooling capacity. A description of the upgrades and performance of the system is provided.

Original languageEnglish
Title of host publicationADVANCES IN CRYOGENIC ENGINEERING
Subtitle of host publicationTransactions of the Cryogenic Engineering Conference, CEC, Volume 51A
Pages790-797
Number of pages8
DOIs
StatePublished - Apr 27 2006
EventADVANCES IN CRYOGENIC ENGINEERING: Transactions of the Cryogenic Engineering Conference, CEC - Keystone, CO, United States
Duration: Aug 29 2005Sep 2 2005

Publication series

NameAIP Conference Proceedings
Volume823 I
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceADVANCES IN CRYOGENIC ENGINEERING: Transactions of the Cryogenic Engineering Conference, CEC
Country/TerritoryUnited States
CityKeystone, CO
Period08/29/0509/2/05

Keywords

  • Cryogenics; refrigerators
  • Low temperature equipment
  • Superconducting cables

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