skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Beware of high stresses in ``A`` frame supported two-level bus structures

Abstract

Rigid-bus structures in many low profile, high voltage transmission substations consist of two-level bus assemblies of tubular conductors with one bus assembly supporting the other bus assembly with rigid tubular ``A`` frames at the crossover points. The lower-level bus is normally supported by a single porcelain post insulator under the ``A`` frame. Rigid ``A`` frames not only support the upper-level bus assembly, but also make the electrical connections between the two buses. This paper addresses the stress problem in the lower-level bus of the two-level bus structure. It presents the results of the structural analysis of a sample two-level bus structure using a simple structural method based on the Three Moment Theorem and equilibrium equations. A spreadsheet template is used to perform the mathematical calculations. The spreadsheet first calculates the maximum allowable bus span length in accordance with the IEEE Standard 605 and then determines the internal stress on the upper and lower-level bus conductors in the two-level rigid bus structures.

Authors:
 [1]
  1. Gilbert Commonwealth Inc., Reading, PA (United States)
Publication Date:
OSTI Identifier:
103670
Report Number(s):
CONF-950414-
TRN: IM9541%%109
Resource Type:
Conference
Resource Relation:
Conference: 57. annual American power conference, Chicago, IL (United States), 18-20 Apr 1995; Other Information: PBD: 1995; Related Information: Is Part Of American Power Conference: Proceedings. Volume 57-II; PB: 914 p.
Country of Publication:
United States
Language:
English
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION; MECHANICAL STRUCTURES; DESIGN; POWER SUBSTATIONS; STANDARDS; HVAC SYSTEMS

Citation Formats

Thaik, A. Beware of high stresses in ``A`` frame supported two-level bus structures. United States: N. p., 1995. Web.
Thaik, A. Beware of high stresses in ``A`` frame supported two-level bus structures. United States.
Thaik, A. 1995. "Beware of high stresses in ``A`` frame supported two-level bus structures". United States.
@article{osti_103670,
title = {Beware of high stresses in ``A`` frame supported two-level bus structures},
author = {Thaik, A},
abstractNote = {Rigid-bus structures in many low profile, high voltage transmission substations consist of two-level bus assemblies of tubular conductors with one bus assembly supporting the other bus assembly with rigid tubular ``A`` frames at the crossover points. The lower-level bus is normally supported by a single porcelain post insulator under the ``A`` frame. Rigid ``A`` frames not only support the upper-level bus assembly, but also make the electrical connections between the two buses. This paper addresses the stress problem in the lower-level bus of the two-level bus structure. It presents the results of the structural analysis of a sample two-level bus structure using a simple structural method based on the Three Moment Theorem and equilibrium equations. A spreadsheet template is used to perform the mathematical calculations. The spreadsheet first calculates the maximum allowable bus span length in accordance with the IEEE Standard 605 and then determines the internal stress on the upper and lower-level bus conductors in the two-level rigid bus structures.},
doi = {},
url = {https://www.osti.gov/biblio/103670}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Oct 01 00:00:00 EDT 1995},
month = {Sun Oct 01 00:00:00 EDT 1995}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: