http://iet.metastore.ingenta.com
1887

Overhead line design

Overhead line design

For access to this article, please select a purchase option:

Buy chapter PDF
£10.00
(plus tax if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend to library

You must fill out fields marked with: *

Librarian details
Name:*
Email:*
Your details
Name:*
Email:*
Department:*
Why are you recommending this title?
Select reason:
 
 
 
 
 
High Voltage Power Network Construction — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

Overhead lines (OHLs) comprise one of the major power engineering technologies, and although the basic principles of OHL design were mostly established at the dawn of electrical power systems, it is a technology that is subject to ongoing development and change. Within this context, the construction of a new OHL remains both complex and challenging. This chapter will examine and summarise salient requirements of OHL design covering the following: 1. OHL design over-view 2. Tower, pole and foundation design 3. Conductor system design 4. insulators and OHL fittings design 5. Tower earth-wires and earth resistance 6. Conductor tension and sag 7. Tower height and spacing 8. OHL design philosophy 9. Routing and siting design 10. OHL asset replacement.

Chapter Contents:

  • 6.1 Introduction
  • 6.2 OHL design overview
  • 6.2.1 OHL design — key requirements
  • 6.3 Tower, pole and foundation design
  • 6.3.1 Tower design
  • 6.3.2 Tower aesthetic design
  • 6.3.3 Pole design
  • 6.3.4 Foundations
  • 6.4 Conductor system design
  • 6.4.1 Conductor requirements
  • 6.4.2 Conductors — materials and types
  • 6.4.3 Gap conductor
  • 6.4.4 Conductor selection
  • 6.5 Insulators and OHL fittings design
  • 6.5.1 Insulator requirements
  • 6.5.1.1 Pin-type insulators
  • 6.5.1.2 Cap and pin insulators
  • 6.5.1.3 Post-type insulators
  • 6.5.2 Insulator materials
  • 6.5.3 OHL fittings
  • 6.5.3.1 Arcing horns
  • 6.5.3.2 Spacers and dampers
  • 6.5.3.3 Sag adjusters
  • 6.5.3.4 Tower clamps and joints
  • 6.6 Tower earth-wires and earth resistance
  • 6.6.1 OHL earth-wires
  • 6.6.2 Tower earth resistance
  • 6.7 Conductor tension and sag
  • 6.7.1 Tension and sag — considerations
  • 6.7.2 Sag and tension — basic theory
  • 6.7.3 Determination of sag
  • 6.7.4 Conductor tension factors
  • 6.7.5 Temperature/ice/wind considerations
  • 6.7.6 Change of state equation
  • 6.7.7 Equivalent span
  • 6.7.8 Tension and sag charts
  • 6.7.9 Conductor supports not on same level
  • 6.8 Tower height and spacing
  • 6.8.1 Tower height and conductor clearances
  • 6.8.2 Tower spacing
  • 6.9 OHL design philosophy
  • 6.9.1 Deterministic design
  • 6.9.2 Probabilistic design
  • 6.9.3 Load factored design
  • 6.10 Routing and siting
  • 6.10.1 Routing and siting — stages
  • 6.10.2 Initial route and siting selection
  • 6.10.3 Inspection of the initial route
  • 6.10.4 Final route and siting selection
  • 6.10.5 Support plotting
  • 6.10.6 Support pegging
  • 6.10.7 Aerial surveys and software solutions
  • 6.11 OHL asset replacement
  • 6.11.1 Asset replacement
  • 6.12 Review

Inspec keywords: power overhead lines; poles and towers; overhead line conductors

Other keywords: electrical power systems; pole design; OHL asset replacement; OHL fitting design; conductor system design; tower height; Conductor sag; earth resistance; Insulators; tower earth-wires; conductor tension; foundation design; tower design; OHL design; overhead line design

Subjects: Overhead power lines; Power line supports, insulators and connectors

Preview this chapter:
Zoom in
Zoomout

Overhead line design, Page 1 of 2

| /docserver/preview/fulltext/books/po/pbpo110e/PBPO110E_ch6-1.gif /docserver/preview/fulltext/books/po/pbpo110e/PBPO110E_ch6-2.gif

Related content

content/books/10.1049/pbpo110e_ch6
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading
This is a required field
Please enter a valid email address