IEEE Transactions on Power Apparatus and Systems · 1970 · 14 citations · 4 references
EngineeringElectrical EngineeringCritical Infrastructure ProtectionEnergy SystemsHeat TransferElectrical InstallationInsulation MaterialsInsulation SystemsPower SystemsPower Transmission SystemsThree-phase CircuitsElectric Power TransmissionElectricity DistributionMoistureResistivityThermal ResistivityThree-phase InstallationThree-phase PowerUnderground Infrastructure
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.
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