Features of Cooling Current Leads (Terminals) for Power Cables Based on High-Temperature Superconductors

This study considers structural drawings and methods for cooling high-voltage terminals (current leads) of superconducting power cables based on high-temperature superconductors. The operation of these terminals cooled by gaseous nitrogen and helium is analyzed using theoretical thermal models that...

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Veröffentlicht in:Russian electrical engineering 2023-04, Vol.94 (4), p.250-258
1. Verfasser: Buyanov, Yu. L.
Format: Artikel
Sprache:eng
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Zusammenfassung:This study considers structural drawings and methods for cooling high-voltage terminals (current leads) of superconducting power cables based on high-temperature superconductors. The operation of these terminals cooled by gaseous nitrogen and helium is analyzed using theoretical thermal models that describe the distribution of temperature and heat flow along current leads in ideal and actual heat exchange. The change in the ratio of optimal current densities and specific heat influxes to the source of cold is shown depending on the flow rate and nature of the cooling gas. It has been quantitatively determined that gaseous helium used for cooling the current-conducting members of the terminals produces a more significant effect than nitrogen.
ISSN:1068-3712
1934-8010
DOI:10.3103/S1068371223040028