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Substation Automation


Substation Focused on Environmental Design

One of the important trends in the design of new overhead lines over the past 20 years has been the development of structures and designs that are less obtrusive and more pleasing visually. Much the same process has also been going on at substations. Green infrastructure begins with sustainable...

Substation Protection


Physical Security & Monitoring


Ensuring Compliance vs Building Resilience

The realization that the vast majority of substations have significant security vulnerabilities was crystalized after the Metcalf incident of April 2013, during which unknown assailants caused the failure of 17 transformers at the Silicon Valley PG&E transmission substation in Metcalf,...

Substation Technologies


Protection of Electrical Power Transformers

INTRODUCTIONIn most large electrical systems, generators and power transformers are the two most expensive pieces of equipment. In addition to the capital cost of purchase, these two key devices are also the most critical to continuous and reliable operation of the system.Consider, for example, the...

Substation Testing & Maintenance


Insulation Resistance Test

Insulation Resistance (IR) test, often called Megger test, is more than 100 years old and assumed to be a very straightforward test. During my inspection and testing work in the past 15 years in Canada, US, and internationally, I have seen different practices of performing and interpretation of IR...

Breakers & Relays


FERC Approves Interconnection for Talen Energy, Amazon Data Center

In a significant move that underscores the growing demand for reliable and sustainable energy to power the expanding digital infrastructure, the Federal Energy Regulatory Commission (FERC) has approved an interconnection agreement between Talen Energy, Amazon Web Services (AWS), and Exelon. This...

Electrical Substations

Insights from the Field: How Thermal Cameras Safeguard Remote Substation Perimeters

The Insights from the Field series features insight from experts who recommend, deploy, and use thermal imaging technology daily. Let's discuss the diverse applications of thermal technology in security, safety, and equipment protection for critical infrastructure. Thermal cameras can monitor the perimeter and core electrical substation components for signs of overheating and unauthorized access.

Security personnel must be able to detect unauthorized vehicles and individuals quickly at critical infrastructure sites. Without intrusion detection, entities like...

Electrical Substations Articles