Abstract
The increasing global population was demanded for more consumption of electricity. In Malaysia, it was reported that 17,790 megawatts (MW) was consumed in October 2017 due to high demand. The peak reading recorded is 0.011% increase compared to demand on April 2016 (17,788 MW). Following this, more transmission tower lines need to be developed to generate more electricity. Land acquisition is the main issue for constructing the new transmission tower because it requires a large area to set it up. The idea of optimization on the existing transmission tower helps in reducing cost for constructing the new structure. The aim of this study is to develop an optimal design of the transmission tower. A 275 kV transmission tower model is used in this study for analyzing and optimizing by using linear static and p-delta analysis. This optimization method is done by reducing tower members as well as increasing size of member’s element. A design calculation for modification and arrangement of the transmission tower members is referred to manual guidelines of EN1993-3-1 and ASCE 10-97. Two alternatives are being prepared to produce an optimal design and result shows that a reduction percentage in term of reduced number of bar members can be saved up to 34 %.
Highlights
The power industry is moving toward the use of high-voltage transmission tower to meet the demand for greater transmission capacity
The design optimization of steel lattice towers has always been a difficult task due to a large number of design variables, in which size, layout and sometimes topology design variables should often be considered simultaneously in order to minimize the weights of the structures
After all, latticed steel structures shall be designed with geometric configurations based on electrical, economic, and safety requirements according to the American Society of Civil Engineers 10 - England 1997 [5]
Summary
The power industry is moving toward the use of high-voltage transmission tower to meet the demand for greater transmission capacity. Many worldwide failures of power transmission towers can be attributed to various extreme loading condition such as broken lines, strong wind or ice loadings. The design optimization of steel lattice towers has always been a difficult task due to a large number of design variables, in which size, layout and sometimes topology design variables should often be considered simultaneously in order to minimize the weights of the structures. It has drawn attention of numerous researchers for a long time [4]. After all, latticed steel structures shall be designed with geometric configurations based on electrical, economic, and safety requirements according to the American Society of Civil Engineers 10 - England 1997 [5]
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