The design of 800 kV transmission line towers: A comparative study

摘要

The relative economy of 800 k V transmission line towers has been examined in detail. Three types of towers namely self-supporting, guyed-V and chainette tower were identified, designed and studied. Towers axe of tangent type for single circuit line. These were designed for typical tender specification based on Indian codal provisions. Each tower was optimized for selected parameters and studied independently. The comparative economy of the three towers has been presented. The comparison includes material weight, fabrication, erection, foundation and land costs. Suitability, merits and demerits of each tower have been discussed. The material saving against rigid tower is 57 percent for guyed-V tower and 67 percent for chainette tower. The chainette tower is more economical than guyed-V tower In terms of material saving (22 percent). Based on overall cost, study showed that chainette tower is 39 percent more economical than self-supporting tower and 13 percent more economical than guyed-V tower.