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Infrastructure & Technologies


The Overlooked Benefits of High-Performance Powerline Conductors

Background:For over 100 years Transmission Engineers have relied on aluminum conductors strengthened by steel core wires, commonly referred to as ACSR conductors. These conductors offered reasonable performance and durability and were capable of operating at temperatures up to 93° C. Above this...

Weathering the Power Quality Storm

How weather affects power quality on the electric grid BY ALDEN WRIGHT & MARK STEPHENS, Electric Power Research Institute Utilities have long understood that weather and grid power quality are closely linked. As anyone who keeps up with the news will note, the last few years have seen a...

Grids Become Highly Vulnerable

Increasingly violent weather, probably caused by global warming, is increasingly taking down electricity distribution lines and poles and cyberattacks are increasingly taking out electricity, apparently just as trials for major terrorism of this sort. Little wonder that the price of grid...

Infrastructure & Technologies

Converting Power Lines to Smart Wires

Increasing the observability and control of the transmission network

BY FRANK KREIKEBAUM, JERRY MELCHER, & JULIE COUILLARD, Smart Wire Grid, Inc.

The North American power grid has evolved into a connected set of four major interconnections delivering low-cost and reliable energy. The U.S. Energy Information Administration reports that the real price of electricity has dropped by a factor of 45 over the last 120 years in the United States. Meanwhile, a study published by the...

Related Articles


Grid Vulnerability

Grids Become Highly Vulnerable

Increasingly violent weather, probably caused by global warming, is increasingly taking down electricity distribution lines and poles and cyberattacks are increasingly taking out electricity, apparently just as trials for major terrorism of this sort. Little wonder that the price of grid...

ADVANCED ANALYTICS

Recent technological and economic events are poised to transform the electric utility industry. Described as “game changers” by industry thought-leaders, these “disruptive challenges” stem from a convergence of factors. 1 Distributed energy resources (DER) and demand-side management (DSM)...

The Three R's: Reducing the Environmental Impact of SF6

Sulfur Hexafluoride (SF6) Gas is used as an electrical insulator and arc suppressant in high and medium voltage electrical equipment in the electrical power utility and industrial power industries. SF6 is also used in medical devices, metal production and other manufacturing applications. The same...

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...


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...

Distributed Energy Resourses

Distributed Energy Resources - Small Scale Power

Distributed energy resources (DERs) can benefit the power system and individual homes and businesses. DERs can increase the resiliency and reliability of the power grid, reduce greenhouse gas emissions, reduce the overall power cost, and provide power at the point of use. Several types of DERs can...

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...

Facing Wildfire? Choose Toughened Glass Insulators

Insulators under fire, what are we talking about? A line directly in the fire is considered as lost A line near the heat of a fire can be saved What is the condition of insulators on a line nearby a fire? Reliability of insulators during or after a fire is a key consideration for T&D...

The Three R's: Reducing the Environmental Impact of SF6

Sulfur Hexafluoride (SF6) Gas is used as an electrical insulator and arc suppressant in high and medium voltage electrical equipment in the electrical power utility and industrial power industries. SF6 is also used in medical devices, metal production and other manufacturing applications. The same...

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