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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...

Substation Protection


Physical Security & Monitoring


Current Trends in Transmission and Distribution

Sargent & Lundy has provided comprehensive engineering, development, permitting, high-level consulting, construction management, and commissioning services for electric power generation and power delivery projects worldwide—approximately 2,000 clients in nearly 100 countries—since...

Substation Automation


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


SCADA for Substations

How new technologies can improve monitoring and control BY LOURENCO TEODORO, InduSoft Substations are a critical component for maintaining electrical supply and load control in low voltage, medium voltage and high voltage electrical distribution networks. In order to ensure the proper functioning...

Electrical Substations

Substation Security

Improve protection with a layered security approach

BY ERIC BYRES, Belden Inc.

An age-old joke in the North American power industry states that if Alexander Graham Bell walked in the room today, he would not recognize the telephone, the technology, or its business model. However, if Thomas Edison walked in, he would still understand the current state of electricity and power generation and distribution. Utility engineers have one of the hardest jobs in the world:...

Electrical Substations Articles