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Overhead T&D




Live Line Maintenance

Live line maintenance: ensure safety with proper fiberglass care and maintenance BY MATT DELL, Hi-Line Utility and Supply The speed of light and the speed in which electricity travels is 186,282 miles per second. When utility workers are faced against stats like that, there is no moving out of the...

Infrastructure & Technologies

High Voltage AC Transmission Lines

Three-phase electric power systems are used for high and extra-high voltage AC transmission lines (50kV and above). The pylons must therefore be designed to carry three (or multiples of three) conductors. The towers are usually steel lattices or trusses (wooden structures are used in Germany in...

Infrastructure & Technologies

Priority to Asset Management

Time to focus on planning contingencies and balancing risk BY DON ANGELL AND MARK RIVERS, Doble Engineering Company By definition for electric utilities, asset management refers to an established system used to monitor and maintain valuable commodities such as transformers and power lines....

T&D Technologies

Overhead T&D, Direct Current Technology

Direct current (DC) is the preferred technology for moving large amounts of power across long distances. DC results in overall higher efficiency and reliability than an equivalently-sized alternating current (AC) system moving the same amount of power.

The Advantages of DC

More efficient: Over long distances, DC transmission can move more power with less electrical losses than an equivalent AC transmission line.

Lower Cost: Higher efficiency means a lower transmission cost, helping renewable energy compete...

Overhead T&D Articles