ANALYSIS AND ECONOMICAL DESIGN OF 400 KV MULTI CIRCUIT TRANSMISSION LINE TOWER

Abstract

The Wheelng of Power from Thermal / Hydro / Nuclear Power stations, and interconnection of state grids have given rise to the need for Extra-High Tension {E.H.T.} transmission lines. Analysis and desgn of transmission line towers is a most challenging Job and requres several engineering man-days and prototype testing. In this project efforts have been made to do 3D Analysis of tower considring all the members of the space truss as primary member. STAAD Pro program has been used to analyse and design the members of 400 Kv multi circuit tension tpwer haave deviation angle 2-15 degree. Fixing of geometry of the tower is done by taking into aaccount , Slope of leg member, Slope of cross arms, Electrical clearance, Mid span clearance, Peak clearance, Phase phase to clearance and slenderness of member. An Excel program has been to do Sag tension calculation s. Steel section Design has done in Exel program, Member section adopted as Starred angle and equal angle section. An att...