Estimation of Combined Ice and Wind Load on Overhead Transmission Lines,

Abstract

In recent years, the design of high voltage transmission lines has been increasingly optimized. In areas where ice accretion on conductors is possible, the load resulting from added weight or increased aerodynamic forces becomes an important design parameter. At the present, calculations for combined icewind loads do not take into account the effect of the accretion shape. Ice accretions are formed on a conductor in a wind tunnel for three types of ice: soft rime, hard rime and glaze. Aerodynamic vertical and horizontal forces are then measured for different wind velocities. It is shown that when the wind remains in the direction of the ice build-up, the aerodynamic force due to the asymmetrical shape is responsible for a significant increase in the total force and that the present combined ice-wind load calculations can dangerously underestimate the risk of an overload. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1983
Accession Number
ADP001683

Entities

People

  • Gilles Morin
  • Luong Vo Van
  • Pierre Mccomber
  • Richard K. Martin

Organizations

  • UniversitĂ© du QuĂ©bec

Tags

DTIC Thesaurus Topics

  • Aerodynamic Forces
  • High Voltage
  • New Hampshire
  • Overload
  • Physical Properties
  • Transmission Lines
  • Voltage
  • Wind
  • Wind Tunnels
  • Wind Velocity
  • Workshops

Fields of Study

  • Engineering

Readers

  • Aerodynamics/Aeronautics.
  • Electrical Engineering
  • Polar and Arctic Studies