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Federal Funding to Protect Nunavut's Coastal Communities from Climate Change

The Canadian government has announced significant federal funding to help safeguard Nunavut's coastal communities from the impacts of climate change. This financial support comes at a crucial time as these communities face rising temperatures, melting ice, and increasingly severe weather events, all of which threaten their infrastructure, homes, and way of life. With the Arctic warming at more than twice the global rate, Nunavut, Canada's northernmost territory, is particularly vulnerable to the accelerating effects of...

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Electrical Substations

Circuit Breaker Lubrication

Developing circuit breaker lubrication procedures

BY RICK YOUNGBLOOD, Doble Engineering Company

Circuit breaker analyzers are used to determine operating speeds and velocity. This information enables the tester to determine if a breaker is safe to place back into service. The data recorded by a test set allows technicians to measure the time it takes from the moment the trip or close button is activated until the breaker closes or opens fully. This is an electrical testing method to determine the mechanical health of the operating mechanism used to open and close the current carrying contacts. Subsequently, the results can be compared to the manufacturer’s design specifications.

As with any load interruption device, contact speed is paramount. However, most companies spend the majority of their time and money to ensure the contact resistance and interrupting media quality meets specification, but fail at the most basic of maintenance tasks that contributes the...

Electrical Substations Articles


Substation Technologies

Substation Focused on Environmental Design

One of the important trends in design of new overhead lines over the past 20 years has been development of structures and designs that are less obtrusive and more pleasing visually. Much the same process has also been going on at substations. For example, even 25 years ago, efforts had already been...
Breakers & Relays

Partial Discharge & Circuit Breaker Asset Management

Detecting and avoiding preventable failures BY JAY GARNETT, Doble Engineering Company While metal clad switchgear can be very reliable, sometimes operating for over 50 years, throughout the aging process, this group of electrical disconnect switches, fuses and circuit breakers can experience...
Substation Automation

The Digital Substation Utopia

Electric utilities have long considered digital substations an insubstantial concept: an ideal vision of all-knowing substations networked into an intelligent grid. However, technological innovations have slowly emerged in the past few decades, consequently, transforming this utopian vision into a...