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Latest News From The T&D Industry

Climate Change and Coffee: A Brewing Concern

As the world grapples with the urgent need to address climate change, even seemingly unrelated topics—like your morning cup of coffee—are starting to raise important questions about the environmental crisis. In his recent piece for the Ottawa Citizen, columnist David Richardson highlights how climate change is impacting everything from local weather patterns to global food systems, with a particular focus on the world’s coffee supply. As he points out, it’s not just about rising temperatures...

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PG&E Secures $15B Loan for Energy Upgrades

Pacific Gas and Electric Company (PG&E), a major utility serving Northern and Central California, has secured a conditional $15 billion loan guarantee from the U.S. Department of Energy's (DOE) Loan Programs Office. This funding aims to enhance PG&E's hydropower generation, battery storage...

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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


Lightning Protection

Lightning Strikes

In Canada, lightning flashes occur about 2.34 million times a year; with the highest levels of concentration during the summer months. While most lightning on earth is ground-to-cloud,  recent research has identified that the majority of lightning events to tall structures, such as wind...
Substation Protection

Safe Grounding in Substations

How to guard utility personnel from shock hazards BY JEFF JOWETT, Megger In the power industry, safety is just as important a function as performance. Safety considerations, parameters, and methods of implementation are an integral part of any electrical system. A most important element is the...