Power Transformers & Electrical Substations

Electrical Substations

Protecting Substations Against Animal Invaders

A closer look at animal-caused outages at substations BY BILL REICHARD, TransGard Systems Every year, squirrels, raccoons, snakes, and other climbing animals cause substation outages across North America. According to a 2010 University of Minnesota study, the resulting estimated cost to electric...

Breakers & Relays

Protective Relay Frustrations

Solving misoperation with line parameter measurements BY WILL KNAPEK, OMICRON USA Between 80 to 90 percent of all power system faults involve ground. Many protective relaying schemes depend on ground distance protection to accurately sense and locate ground faults on multi-terminal sub-transmission...

Physical Security & Monitoring

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...

Power Transformers

Transformer Testing & Maintenance

Understanding Bushing Failure Modes and Monitoring for Optimal Transformer Health

Monitoring the health of bushings is vital for ensuring the reliability of transformers, especially in high-stakes environments like power grids and industrial facilities. Bushings, critical components of transformers, are prone to various failure modes that can lead to operational inefficiencies...

Transformer Monitoring

Hydrogen Monitoring in the Transformer Headspace Compared to Traditional In Oil Monitoring

The utilization of online dissolved gas analysis monitoring has proven to be one of the most effective predictors of overall transformer health and condition. A wide range of monitoring systems are available, offering multiple costs, features, and benefit combinations. Hydrogen MonitoringSingle or...

Transformer Monitoring

Enhancing Transformer Resilience: Fire Barriers and Safety Measures in Modern Substations

The Growing Concern of Transformer Fire Risks An Electrical Substation Transformer is a critical component of modern substations, playing a vital role in the transmission and distribution of electricity. However, due to the high-voltage operations, flammable insulation materials, and exposure...

Home Transformation

Transformation

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 breaker’s insulating system. This process will allow corrective actions to be taken to ensure the integrity of the breaker.

The Doble test is completed by measuring the insulation’s dielectric-loss and capacitance and...

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DILO 3-033-R002 SF6 Gas Leak Detector

M7100 High-Voltage Asset Analyzer

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Electricity Today T&D Magazine

Electrical Substations

Protecting Substations Against Animal Invaders

Protective Relay Frustrations

Geomagnetic Disturbances: A Danger to the Power Grid

Power Transformers

Understanding Bushing Failure Modes and Monitoring for Optimal Transformer Health

Hydrogen Monitoring in the Transformer Headspace Compared to Traditional In Oil Monitoring

Enhancing Transformer Resilience: Fire Barriers and Safety Measures in Modern Substations

Transformation

Power Factor Testing of Circuit Breakers

Transformation Articles

Transformers and the Power Grid

Advanced Sensor Technologies for Intelligent Transformers and Substations

Computer Simulation of Grounding Applications

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

Pennsylvania’s Yaw Bill

Storm-Hardened Switchgear

T&D Buyer’s Guide Companies

Transformation Videos

Introducing Critter Guard

VLF E Series Product Training

Power Outages in the United States

Transformation Products

DILO 3-033-R002 SF6 Gas Leak Detector

M7100 High-Voltage Asset Analyzer

Transformation Shared Media

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

Electricity Today T&D Magazine - Substation And The Grid Mar&Apr 2024 Special Edition

Electricity Today T&D Magazine - Substation July&August 2019 Special Edition

4 Benefits of Distribution Automation in a Decentralized Energy World

Itron to Buy Silver Springs to Boost Smart Grid Presence

The Power Of Microgrids

Detect Electrical Discharge Defects with Ultrasound

Substation Maintenance Best Practices

The Fight Against Animal-Caused Power Outages

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