Windampers help keep gallop-prone lines in service
Damping devices for eliminating galloping on transmission lines have found increasing support in the sleet belt of the midwest. In these areas, winter storms result in ice buildup in transmission lines, and in high winds the layer of ice acts like an airfoil, creating a lift force on conductors. If the force goes undamped, it may be amplified until galloping occurs, causing the lines to touch and trip out. Surveys show that galloping occurs in winds of about 25 mph, usually across flat terrain. Steel companies and the Denver Airport are some of the companies installing dampers on their own. There is a preference for the Windamper System because of its ease of installation. After looking at spoilers, pendulums, and dampers, dampers were preferred because the spoilers were made of plastic instead of metal which didn`t seem as reliable over the long term.
- OSTI ID:
- 68648
- Journal Information:
- Electric Light and Power, Vol. 73, Issue 2; Other Information: PBD: Feb 1995
- Country of Publication:
- United States
- Language:
- English
Similar Records
Windamper method of galloping control. Pt. II. Prediction of dynamic galloping. Final report. [Ice buildup on windward side]
Power Line Damage, Electrical Outages Reduced in the ''Sleet Belt'': NICE3 Steel Project Fact Sheet