• DocumentCode
    1038481
  • Title

    Underground Power Transmission with Isolated-Phase Gas-Insulated Conductors

  • Author

    Graybill, Howard W. ; Williams, Jay A.

  • Author_Institution
    I-T-E Imperial Corporation
  • Issue
    1
  • fYear
    1970
  • Firstpage
    17
  • Lastpage
    23
  • Abstract
    A 345-kV underground transmission system using isolated-phase construction, with concentric aluminum tubes insulated with sulphur hexafluoride (SF6) gas is described. A 600- foot (183-meter) long three-phase installation of this type made late in 1969 at Consolidated Edison´s Buchanan substation, on the tie between the Keystone 500-kV system and the New York¿New England 345-kV grid is discussed. The link will be capable of carrying 2000 MW in a single trench, backfilled around the enclosures with sand having relatively low thermal resistivity at low moisture levels.
  • Keywords
    Aluminum; Conductivity; Conductors; Foot; Gas insulation; Moisture; Power transmission; Substations; Sulfur hexafluoride; Thermal resistance;
  • fLanguage
    English
  • Journal_Title
    Power Apparatus and Systems, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9510
  • Type

    jour

  • DOI
    10.1109/TPAS.1970.292642
  • Filename
    4074007
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1038481