Fault current limiting hts cable and method of configuring same

H - Electricity – 01 – L

Patent

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Details

H01L 39/14 (2006.01) H01B 12/02 (2006.01) H01L 39/16 (2006.01) H02H 9/02 (2006.01)

Patent

CA 2678251

A cryogenically-cooled HTS cable is configured to be included within a utility power grid having a maximum fault current that would occur in the absence of the cryogenically- cooled HTS cable. The cryogenically-cooled HTS cable includes a continuous liquid cryogen coolant path for circulating a liquid cryogen. A continuously flexible arrangement of HTS wires has an impedance characteristic that attenuates the maximum fault current by at least 10%. The continuously flexible arrangement of HTS wires is configured to allow the cryogenically-cooled HTS cable to operate, during the occurrence of a maximum fault condition, with a maximum temperature rise within the HTS wires that is low enough to prevent the formation of gas bubbles within the liquid cryogen.

L'invention concerne un câble haute tension refroidi cryogéniquement qui est configuré pour être compris dans un réseau électrique à usage général ayant un courant de défaut maximal qui peut se produire en l'absence du câble haute tension refroidi cryogéniquement. Le câble haute tension refroidi cryogéniquement comprend un trajet de refroidissement de liquide cryogène continu pour la circulation d'un liquide cryogène. Un agencement continuellement flexible de fils électriques haute tension présente une caractéristique d'impédance qui atténue le courant de défaut maximal d'au moins 10 %. L'agencement continuellement flexible des fils électriques haute tension est configuré pour permettre le fonctionnement du câble haute tension refroidi cryogéniquement, pendant l'occurrence d'une condition de défaut maximal, avec une élévation de température maximale dans les fils électriques haute tension qui est suffisamment basse pour empêcher la formation de bulles de gaz dans le liquide cryogène.

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