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Substation Testing & Maintenance


Substation Automation


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...

Substation Protection


Breakers & Relays


Vacuum Interrupter Testing for Circuit Breakers

How to predict field life using vacuum interrupters BY FINLEY LEDBETTER, Group CBS Utilities have widely replaced older air-magnetic and oil interrupters for circuit breakers rated at one kilovolt (kV) or higher with vacuum interrupters (VI) due to higher interrupt capability. Vacuum interrupters...

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 Technologies


Animal Outage Prevention

According to the American Public Power Association, squirrels are among the top causes of power outages across the United States. Depending on your geographic region, there may be no “quiet” season - squirrels and other “Critters” can be active all year long.Since...

Electrical Substations

The Digital Substation Vision: From Utopian Concept to Grid Backbone

A digital substation is a modernized electrical substation that replaces traditional analog equipment and copper wiring with digital signaling, intelligent electronic devices (IEDs), and fiber-optic communication. It enables real-time data exchange, advanced automation, and greater efficiency in managing grid operations and infrastructure health.

For decades, the idea of the digital substation hovered just beyond reach—a theoretical construct wrapped in futuristic language and layered with uncertainty. It was described as an “intelligent substation,” capable of processing...

Electrical Substations Articles