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Instaling RJ TextEd 15.962/16/2024 ![]() ![]() The rationale behind developing the costs on a component basis is to allow the reader to make design and cost component changes that fit specific conditions, thereby providing a method of estimating the cost of transmission facilities. The intent was to determine the in-place component costs for transmission systems to be installed in the 1985 to 1990 time frame. ![]() The cost of various high-capacity transmission options were investigated. Substitution of conductor materials (e.g., aluminum for copper) in cable systems resulted in changes in the total system energy content on the order of = , The energy content of 36 materials and basic products, in terms of Btu per ton, was calculated as part of this study. ![]() Most of the energy content in each system can be attributed to the metallic components plastic and insulating oil also contribute significantly. Installation energy requirements were generally 10% or less of the inherent system energy content based on the materials used in each system. Total installed energy content for these systems ranged from 4 x 10/sup 9/ to 1.2 x 10/sup 11/ Btu per mile. ![]() The system operating voltages analyzed included 138, 230, 345, 500, 765 and 1,200 kV for ac systems, but all systems were not analyzed at the higher voltages. The energy content per mile of installed underground and overhead power transmission systems has been calculated for the following types of systems: self-contained oil-filled cables HPOF pipe-type cables extruded dielectric cables compressed-gas-insulated systems overhead lines (ac and dc) and two proposed superconducting systems (ac and dc). ![]()
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