Investigation of AC/DC Resistance Ratios of Various Designs of Pipe-Type Cable Systems

Ac/dc resistance ratios of pipe-type cables . Further updating of the methods of calculating are essential for the accurate determination of amlosses and determining the ratings of pipe-type pacity and power transmission capability. This Paper cable systems incorporating data obtained during presents such measured and calculated data for large the performance of the project. size compact segmental aluminum and tin and enamel coated copper conductor cables in carbon and stainless . Evaluation of the economic aspects of convensteel pipes. Ac/dc resistance ratios have also been tional and innovative pipe-type cable systems. determined for single cable per pipe systems. Measurements were also performed for special pipe designs This Paper covers the work performed under EPRI comprising carbon steel pipes with silicon steel Project 7832-2 and includes the results of the above liners and a resin/steel composite structure. An investigations. This Paper can be considered as economic evaluation of the various cable systems supplementing the work reported in References 1 and 2. including material costs and cost per MVA-mile, employing present worth analysis is presented. II. BACKGROUND