Electrical Substations

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…
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Latest Electrical Industry News

Vacuum Interrupter Testing for Circuit Breakers

How to predict field life using vacuum interrupters BY FINLEY LEDBETTER, Group CBS Utilities have widely replaced older air-magnetic and oil interrupters for circuit breakers…
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Circuit Breaker Time and Motion Testing

Determining mechanical condition of high-voltage circuit breakers BY JOZEF LEVI, Doble Engineering Company Life expectancy of a newly installed high-voltage circuit breaker is approximately 40…
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Zero-Trust Substations: How CIP Is Shifting from Perimeter Defense to Continuous Vendor and Supply-Chain Risk Management

Utilities are rethinking cybersecurity. The zero-trust model replaces perimeter defense with continuous verification—of every device, vendor, and data path—across the substation and supply chain. The…
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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…
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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…
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The Fight Against Animal-Caused Power Outages

Every day across the country, animals enter substations for warmth, food, security, or simply out of curiosity. In many areas, wildlife intruding into power equipment…
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Smart Substations and Their Role in the Evolving Smart Grid

A Smart substation digitizes protection and control, enabling utilities to detect faults faster, manage DER volatility, and reduce outage risk. The payoff depends on architecture,…
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Electrical Substations Articles

Circuit Breaker Lubrication

Circuit Breaker Lubrication

Developing circuit breaker lubrication procedures BY RICK YOUNGBLOOD, Doble Engineering Company Circuit breaker analyzers are…
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Protecting Substations Against Animal Invaders

Protecting Substations Against Animal Invaders

A closer look at animal-caused outages at substations BY BILL REICHARD, TransGard Systems Every year,…
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AI at the Substation Edge: Digital Twins and Predictive Maintenance for Transformers and Switchgear

AI at the Substation Edge: Digital Twins and Predictive Maintenance for Transformers and Switchgear

From Data Collection to Insight Modern substations generate vast amounts of data—temperatures, gas levels, vibrations,…
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Smart Transformers: Enhancing Grid Efficiency and Reliability

Smart Transformers: Enhancing Grid Efficiency and Reliability

The evolving demands of modern power grids necessitate the adoption of advanced technologies that can…
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Substation Maintenance Best Practices

Substation Maintenance Best Practices

Improving substation maintenance best practices for greater success BY BUDO MILOVIC, DV-Power Currently, substation maintenance—regular…
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