Electricity Forum Intelligent Power Today Magazine Arc Flash Clothing

Electrical Substations


How Dangerous is Linemen Work?

Many occupations pose risks to workers, but few match the dangers that linemen face daily. Linemen play a critical role in maintaining and restoring the power grid, often working in extreme weather conditions, at significant heights, and around high-voltage electrical systems. Their work is...


The Role of SCADA in Grid Monitoring and Control

As electric power systems grow in complexity, the need for real-time monitoring and control has never been greater. At the center of this transformation is SCADA—Supervisory Control and Data Acquisition—a system architecture that enables utilities to collect, process, and act on data...

Power Transformers



Utility Transformers

Radiator Fin(s) Leak Repair

Radiator fins are notorious for leaking at various locations. One of which is where the fins are attached (welded) to the horizontal bottom-run header. Measurements are taken so a weir box can be installed to cover the fin(s) that are leaking. It is preferred the weir box will cover above the...

Transformer Testing & Maintenance

TRANSFORMER INRUSH

ABSTRACTHere we discuss the phenomenon of transformer inrush; what it is and its significance to transformer protection design. INTRODUCTIONA couple of years ago in this Transformer Special Edition, we wrote an article that covered the most used transformer protection schemes. As was pointed out...

Transformation

Geomagnetic Disturbances: A Danger to the Power Grid

In 1989, the Québec grid collapsed as equipment protection relays tripped in a cascading sequence of events. Six million consumers were left without power for up to nine hours. The cause of this major outage was a geomagnetic disturbance (GMD).

Geomagnetic disturbances occur during solar storms caused by charged particles, that are ejected by the sun toward Earth. These high-energy particles, known as a coronal mass ejection, can travel to Earth in 14 to...

Transformation Articles