Committee Chair

Wu, Weidong

Committee Member

Owino, Joseph; Fomunung, Ignatius; Onyango, Mbakisya A.

Department

Dept. of Engineering

College

College of Engineering and Computer Science

Publisher

University of Tennessee at Chattanooga

Place of Publication

Chattanooga (Tenn.)

Abstract

This study simplified the analysis required for the extension of a single circuit tangent 161kV transmission tower. The parameters were modified and modern criteria used to evaluate the tangent tower with various body extensions. The basis of analysis for the extended lattice towers compared the ground-line moment of the tallest tower in each class to the ground-line moment of various tower heights. This study analyzed 62,640 design input combinations for the tower using modern NESC loadings and determined which combinations fall below the maximum design ground-line forces. The ground-line force analysis was modernized by lowering the overload factors from their original design values of to modern NESC Medium Loading Zone values. This decrease in overload factors resulted in a decrease of compression and tension ground-line forces. These decreases in ground-line forces result in an increase of 25% for compression capacity and 33% for tension capacity.

Degree

M. S.; A thesis submitted to the faculty of the University of Tennessee at Chattanooga in partial fulfillment of the requirements of the degree of Master of Science.

Date

12-2018

Subject

Electric power systems; Overhead electric lines

Keyword

Transmission; Tower; Extension; Moment

Discipline

Engineering

Document Type

Masters theses

Extent

xi, 60 leaves

Language

English

Rights

Under copyright.

License

http://creativecommons.org/licenses/by-nc-nd/3.0/

Included in

Engineering Commons

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