Abstract
The main topic of this paper is a static analysis of transmission tower beam structure fixed to the earth. It contains facts necessary for a need to create and apply tower beam structures. Beam elements were used to design a model and a static analysis was performed in finite element program Ansys Workbench. Three types of analyses were applied. The modal analysis was applied to verify the model compatibility. The static analysis was applied to find maximal deformations and the bending moment caused by overhead conductors and self-weight. Eigenvalue buckling was applied to state a loss of stability. Finally, stability and suitability of the whole construction was considered.
Highlights
The historical development itself required an origin and a beginning of application of power line pylons for electric power transmission [1]
3.2 Eigenvalue Buckling The third analysis will be an eigenvalue buckling analysis of the transmission tower, as it is a slim construction. This type of analysis provides us information regarding identification of maximum values of load in which a damage of the analyzed structure may occur under the influence of a stability loss [9, 10]
The first value 7.2388 provides us the information that if we increase the amount of load 7.2388 times, the first case of a stability loss occurs
Summary
The historical development itself required an origin and a beginning of application of power line pylons for electric power transmission [1]. In 1891 the first transmission network of three-phase alternating current took place during the international electricity exhibition in Frankfurt. Miller together with his colleague M.O. Dolivo-Dobrovolskij and other professionals were able to construct a network of the length of 110 miles (around 177 km) from town Lauffen to Frankfurt. At the beginning of the 20th century, first 110 kV and later 220kV facilities were constructed. Transmission structures have various constructions and application follows needs for their operation, placement in a ground, a type of tension and transmitted volume of electrical energy. In the submitted paper we analyze a standard high voltage transmission tower concreted in the base [2]
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