EHV And UHV Transmission Lines: Electrical, Structural, and Environmental Design Concepts and Evaluations

摘要

The results are presented of a program whose purpose was to investigate new concepts of power transmission structures, considering all electrical and mechanical parameters, in order to minimize their effect on the environment. Information is included on: new structural concepts for power transmission towers; tower size reduction through the use of new materials in insulated structural members; conductors for multiphase AC and HVDC transmission; minimization of the visual impact of power towers while assuring minimum flashover risks and noise effects with smaller towers; life-cycle costing and economic comparisons of various tower designs; and methods for upgrading existing AC lines to higher voltage or for providing for upgrading in the design of new transmission lines. (ERA citation 07:050138)