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Application of Symmetric Conditions in the Simulation of High Voltage Power Transmission Models

The height of the power transmitting towers is usually in the range of 10m to 40m and the separation between two consecutive towers is about 200m to 400m. In addition, the area of the ground that needs to be considered in the simulation is large. Therefore, Finite Element Method (FEM) is not suitable for simulation of this application. Whereas Boundary Element Method (BEM) is best suited for these open region problems. This paper refers to...

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Climate Change News

First Ice-Free Arctic Day Could Come Before 2030

The Arctic is undergoing rapid changes, and a new study suggests that the first ice-free day in the Arctic Ocean may come sooner than previously expected—before 2030. This alarming possibility underscores the accelerated pace of climate change and its potential to significantly alter the...

Overhead T&D

Rugged Tablets for Utility Fleet Vehicles

In reports analyzing the response of power utilities to incidents such as Hurricane Sandy, or the more recent ice storms on the east coast, one item has been remarkably consistent—the conclusion that communication requires improvements. The concern is not hard to fathom. Knowing accurately when power will return has an enormous impact on how a family or a business copes with the situation. Moreover, if the customer depends on electrical power for a life-support system, having the right knowledge can be a matter of life and death. The finger, however, is often pointed inappropriately at the wrong party.

News reports often cite insufficient service desk personnel, or poor forecasting by managers. What is missed is that those in charge simply do not know because of insufficient communication with the field. In a recent ice storm incident in Canada, for example, a local utility reported that the dispatch system deteriorated...

Overhead


Fiber-Reinforced Composite Cross Arms for Transmission Structures

Fiber-reinforced polymers versus traditional cross arms materials BY JANOS TOTH & GRANT LOCKHART, FRP Transmission Innovations Inc. Recently, utilities have started using newer options such as component polyurethanes instead of older, widely used conventional materials. Specifically,...

Underground


Monitoring Underground Lines with SCADA

How SCADA can help prevent repairs and service disruptions BY RICHARD CLARK, InduSoft Underground transmission and distribution lines create unique challenges, as they require special insulation materials to protect conductors, and complex cooling systems because heat cannot be dissipated in free...

Infrastructure


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...