Power Transformers & Electrical Substations

Electrical Substations

Breakers & Relays

Selecting Substation Medium-Voltage Switchgear: GIS vs. AIS

Understanding differences between GIS and AIS in five points BY GAETAN DJENANE, Schneider Electric, Inc. Many considerations must be taken into account before selecting the electrical medium-voltage (MV) switchgear that best meets a user’s needs. From a management perspective,...

Substation Automation

New data suggests real-time pricing can help customers save money

Most utility customers now pay an average price for electricity that changes little (if at all) over the course of the year. Average, flat-rate, real-time pricing is akin to a form of insurance, where a premium is paid to hedge against market volatility and price spikes. Yet this approach misses...

Substation Testing & Maintenance

Power Factor Testing of Circuit Breakers

Detecting contamination and deterioration in SF6 breakers to ensure longevity BY LINDA NOWAK, Doble Engineering Company The purpose of “Doble testing”, or power factor testing, SF6 (sulfur hexafluoride) circuit breakers is to detect the presence of contamination and/or deterioration of the...

Power Transformers

Transformer Testing & Maintenance

Conductive Glues

Electrically conductive pastes in high-voltage transformers BY LISA RINALDO, Prohm-tect As with other components of North American infrastructure such as wastewater and stormwater systems, much of the continent’s electrical grid faces long-term problems. Aging facilities, rising energy...

Climate Change Strains Global Electricity Networks: A Wake-Up Call

The increasing frequency and intensity of climate-related disasters are placing unprecedented strain on the world's electricity networks, with severe implications for global energy security. According to a recent Bloomberg report, the effects of climate change are pushing many electricity grids to...

Transformer Testing & Maintenance

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...

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Transformation

Power Transformers Health Check

Power transformers are static electric machines used to step-up or step-down voltage in electric power applications. The capital cost of a power transformer in the range of 100MVA can be $1M or more and by the time it is under operation, the price is increased. The average age of installed large power transformers (LPTs) in the United States is approximately 45 years, with 70 percent of LPTs being 30 years or older. The lead time...

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Electricity Today T&D Magazine

Electrical Substations

Selecting Substation Medium-Voltage Switchgear: GIS vs. AIS

New data suggests real-time pricing can help customers save money

Power Factor Testing of Circuit Breakers

Power Transformers

Conductive Glues

Climate Change Strains Global Electricity Networks: A Wake-Up Call

Radiator Fin(s) Leak Repair

Transformation

Power Transformers Health Check

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Wireless Networks and Substation Automation

Storm-Hardened Switchgear

Navigating the Transformer Supply Crunch: Strategies for Utilities Amidst Global Shortages

Since 1952 Tallman has been Setting the Standard for Linemen

The Distribution Transformer - Critical Power System Component

Cybersecurity in Substation and Grid Communications

T&D Buyer’s Guide Companies

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Ultrasound for Reliable Electrical Systems

Protection Relay Testing (50ADM-P Secondary Current Injection Test Set)

Methodology for the maintenance program of high voltage substations

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Electrical Testing And Maintenance Handbook, Vol. 11

Electricity Today T&D Magazine - Electrical Reliability Systems November&December 2022 Special Issue

Electricity Today T&D Magazine – Intelligent Transformers & Substations Fall 2025 Special Edition

Energy Storage for Grid Security and Modernization

Distributed Energy Resources: Part 2. Leading the transformation to a cleaner, smarter, more flexible grid

THE SMART GRID: STATUS AND OUTLOOK

Transmission Planning for Grid Security

High Voltage Direct Current (HVDC) Substations: Revolutionizing Long-Distance Power Transmission

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

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