Achieved Reliability of the North American Design Approaches for Transmission Overhead Structures

Author

Bhuyan, Gouri ; Li, Hong

Author_Institution

Civil Infrastructures & Alternative Energy Technol. Dept., Powertech Labs, Surrey, BC

fYear

2006

fDate

11-15 June 2006

Firstpage

1

Lastpage

5

Abstract

Structural reliabilities of three reference transmission overhead structures: a suspension steel lattice tower, a tangent H-frame wood structure and a self-supporting steel pole structure, designed according to the stipulated deterministic approaches of the American National Electrical Safety Code (NESC C2-2002) and the Canadian Standard (CSA C22.3 No. 1-2001) were assessed. Structural reliabilities of these reference structures, designed according to an alternate Canadian approach based on reliability-based design, were also assessed. The paper presents the achieved reliability for the reference structures, considering two balanced load scenarios: wind only and wind combined with ice. Similarities and differences between the NESC C2 and the CSA C22.3 design approaches are discussed

Keywords

design engineering; poles and towers; power overhead lines; power transmission reliability; steel; structural engineering; wood; American National Electrical Safety Code; Canadian CSA C22.3 No. 1-2001 Standard; NESC C2-2002; North American design approaches; deterministic approaches; reliability; selfsupporting steel pole structure; suspension steel lattice tower; tangent H-frame wood structure; transmission overhead structures; wind only load; wind-ice load; Code standards; Ice; Lattices; National Electrical Safety Code - c2; Poles and towers; Power system reliability; Power transmission lines; Reliability engineering; Steel; Wind speed; CSA C22.3; Deterministic; Lattice Steel Tower; NESC C2; Reliability Index; Reliability-based Design; Steel Pole; Structural Reliability; Transmission Structures; Wood H-Frame;

fLanguage

English

Publisher

ieee

Conference_Titel

Probabilistic Methods Applied to Power Systems, 2006. PMAPS 2006. International Conference on

Conference_Location

Stockholm

Print_ISBN

978-91-7178-585-5

Type

conf

DOI

10.1109/PMAPS.2006.360416

Filename

4202379