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

Conference · Mon Jun 01 00:00:00 EDT 2020

DOI:https://doi.org/10.1088/1757-899X/755/1/012137· OSTI ID:1649558

Demko, Jonathan A. ^[1]; Duckworth, Robert  ^[2]; Churu, Gitogo ^[1]; Hassenzahl, William ^[3]

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1. LeTourneau University, Texas
2. ORNL
3. Advanced Energy Analysis

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.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1649558
• Resource Relation: Journal Volume: 755; Journal Issue: 1; Conference: 2019 Cryogenic Engineering Conference and International Cryogenic Materials Conference (CEC) - Hartford, Connecticut, United States of America - 7/21/2019 12:00:00 PM-7/25/2019 12:00:00 PM
• Country of Publication: United States
• Language: English