Evaluation of Experimental Towers in the 230-Kv Glen Canyon-Shiprock Transmission Line

摘要

Results of a 6 year investigation program of new tower designs and erection procedures for transmission lines are reported. The 7-mile test section of a 230-kv transmission line near Kayenta, Arizona, consisted of 4 towers each of 7 different types, some erected by cranes and some by helicopter. Installed cost data are given. The 6-year service reliability was satisfactory for this experimental section of transmission line. Feasibility of helicopter erection was satisfactorily demonstrated. Tower designs based on guyed construction were acceptable. Self-supporting towers were found to be most economical. Environmentally, use of guyed towers should be avoided near substations, highways or in agricultural fields. Basic design data of the transmission line and tower design data are given. (Author)