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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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Why calibrate test equipment

You’re serious about your electrical test instruments. You buy top brands, and you expect them to be accurate. You know some people send their digital instruments to a metrology lab for calibration, and you wonder why. After all, these are all electronic — there’s no meter...

T&D Trends

Climate Change News

A Natural Solution for a Changing Climate

The article from The Nature of Things explores how beavers, often seen as pests, could become an unexpected solution to the increasing challenges posed by climate change, particularly in relation to droughts impacting farmlands. By examining how these industrious creatures could offer a natural way...

Overhead T&D

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 line design or refurbishment.
One must evaluate the risk of a line drop in the proximity of a fire as well as the possibility for a catastrophic failure afterwards resulting from a degraded insulator.

Our study on a comparison of insulators electromechanical strength after heat exposures shows

Based on “INSULATORS UNDER FIRE” – GEORGE JM / PRAT S – EDM 2019, International conference on overhead lines, Design, Construction, Inspection & Maintenance, Mar. 25-28 2019, Fort Collins, Colorado, USA / Reliability Behaviour.

For porcelain and composite insulators

During an extreme heat exposure, there will be no...

Overhead

Transmission Line Resiliency

Resiliency is a term used more and more by transmission line stakeholders including designers, operators, and owners. Resilience is simply defined as toughness or the capacity to recover quickly from difficulties. It can be used to describe a system, an object or even a person. Dr. Ginsburg, child...

Underground

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...

Infrastructure

Enhance Data Center Security

How utilities can protect operations from penetration BY MICHAEL STUBER, Itron For utilities deploying Smart Grid solutions, the major security concern is often the field devices. Utilities and vendors have long understood that field devices such as meters, switches, routers, and concentrators...