Analysis of the thermal recovery of HTS cables after an overcurrent fault

J. A. Demko, R. C. Duckworth, G. Churu, W. Hasssenzahl

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations

Abstract

High temperature superconducting (HTS) power transmission cables are cooled to operating temperatures typically below 80 K. A valuable feature of some HTS cables is that they can limit short-circuit fault currents, which can be more than ten times the maximum operating current of a cable. When a fault occurs the HTS wire is no longer superconducting and the heating which occurs will raise the temperature above the allowable operating point. To recover from the fault, the conductor must be cooled down before returning to service. The recovery is affected by the refrigeration system's performance which varies with load and temperature. A transient numerical model of an HTS cable is applied to investigate the thermal recovery after a fault for some HTS cable system configurations and operating conditions.

Original languageEnglish
Article number012137
JournalIOP Conference Series: Materials Science and Engineering
Volume755
Issue number1
DOIs
StatePublished - Jun 29 2020
Event2019 Cryogenic Engineering Conference, CEC 2019 - Hartford, United States
Duration: Jul 21 2019Jul 25 2019

Funding

We would like to thank LeTourneau University School of Engineering and Engineering Technology for their generous support of this research effort. We would also like to thank the Hassenzahl family for supporting the effort in preparing this manuscript. This manuscript has been authored in part by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US Government retains and the publisher, by accepting the article for publication, acknowledges that the US Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).

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