Software based on heuristic technique for optimization of transmission line towers

摘要

Towers and tower like structures are, literally speaking, the 'pillars' of the infrastructure for the transmission of electrical power, telecommunication and broad casting. Substantial savings In material and total cost can be achieved through the selection of efficient structural configuration, and rational and optimum designs without compromising on the structural safety and reliability of towers. Genetic algorithms have been shown to be very effective in engineering design and optimization including the size, configuration and topology. Hence in this paper a genetic algorithm based methodology is described for the optimum weight design of Transmission line towers, A software has been developed which, Is capable of computing various loads and load combinations specified by the current IS specifications for Transmission line towers. The developed code has been tested on three large problems and the optimal designs have been compared with the results reported in literature. A 66kV transmission line tower is optimised for the loads and load combination specified by IS:802 (Partl/Secl)-1995, by considering stress, deflection and buckling criteria specified by IS:802 (Part1/Sec2)-1992. Since the wind loads and dead loads of the structure depend upon the section (area) selected, the program will automatically update the loads and load combinations and will produce an optimal solution. It is found that genetic algorithms work irrespective of whether stress or deflection is the governing criterion.