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Overhead T&D


Infrastructure & Technologies

Underground Smart Grid

In recent years, the cost to bury high-voltage power lines has decreased dramatically. The American Transmission Company reports that installation costs for underground transmission lines (over 100 kilovolts) are now only 2.5 to 10 times the cost of an equivalent overhead line. Consequently, the...

Fleet Management Innovations

Valuable state-of-the-art tools for electric utilities BY JOE CAYWOOD, Terex Utilities With all the challenging demands of a utility marketplace, increased understanding of ownership and operating cost, as well as utilization, fleet managers must work through several different scenarios when making...

Infrastructure & Technologies

Transmission Line Design

Taking 3-D drawing techniques to new technological heights BY BOB ZAPPITELLI, & HAROLD HARKONEN, Nordmin Engineering Historically, transmission line design and drafting has been an arduous task. It often involved an iterative manipulation of several parameters to achieve a final solution. The...

Infrastructure & Technologies

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...

Infrastructure & Technologies

Aging Cable Infrastructure

The 2014 Annual Energy Outlook Report compiled by the U.S. Energy Information Administration (EIA) forecasts that total electricity demand will grow by 29 percent (0.9 percent per year) by 2040. While growth has slowed in every decade since the 1950s, due in part to efficiency gains in appliance...

Case Study

EFACEC case study

The EFACEC Group is leading the supply of integrated solutions and equipment in the market of power generation, transmission and distribution. The Group forms a complete value chain, from building turnkey projects to equipment manufacture, where integrated solutions are developed and designed in...

T&D Technologies

power transmission tower

Vibration and Noise Control in T&D

It is very often that “just putting some rubber” to isolate structures creates an inefficient or even a vibration isolation problem, without taking into account the characteristics of the whole system: such as media environment and temperature, material stiffness adjusted to the application load, surface area, material transmissibility, as well as pad design techniques, like shape factor conformity. These are fundamental to a good anti-vibration material selection and consequent noise reduction.
Through experience in T&D...

Overhead T&D Articles