Power Transformers

Transformer Software & Technologies

MITIGATING TRANSFORMER FAILURES: ADVANCED MONITORING AND MAINTENANCE STRATEGIES

Power transformers are critical assets in electrical transmission and distribution networks. Their failure can lead to widespread outages, costly downtime, and potential safety hazards. As transformers age and operate under varying electrical and environmental stresses, degradation becomes...

Transformer Protection

Advantages of Headspace Hydrogen Monitoring for Network Transformers

INTRODUCTION The utilization of online dissolved gas analysis monitoring has proven to be one of the most effective predictors of overall transformer health and condition. Monitoring can vary greatly from nine gas to single gas systems to best suit the customers application when considering...

Dielectric Fluids

Exploring Online Dissolved Gas Analysis Monitoring for Transformer Insulating Fluids

As a philosophy and English major who has spent the last 20+ years working in the utility industry,I often come across topics that challenge me because I don’t have a science or engineering background. This article is an exploration of the basics around online DGA monitors, to better...

Electrical Transformers

Power Utility Replaces Aging Transformers with Customized, Drop-in Units

As aging transformers at generation facilities near end-of-life cycles, a number of potentially dangerous events can come into play when it comes to aging transformers – in addition to untimely power outages and costly repairs. Because many transformers are exposed to dust and high operating...

Transformer Testing & Maintenance

How to Improve Transformer Protection

Using symmetrical components for fault discrimination in differential protection BY IMRAN RIZVI, ABB Inc. Classical differential protection schemes are subject to ghost differential currents due to current transformer (CT) saturation and magnetization currents. Several methods are used to counter...

Utility Transformers

Zensol new instrument for OLTC testing

According to CIGRE A2.34, the dynamic resistance measurement or DRM (OFFLINE) is a test that offers diagnostics for several diverter or selector switch malfunctions such as: contact problems, broken springs, broken transition resistors, poor contact pressure, inadequate transition time, momentary...

Home Transformation Power Transformers

Special Power: ‘Flexible Transformer’ Could Become The Grid’s New Superhero

The world is mobilizing to meet net-zero emission targets over the coming decades, and it seems that everywhere you look, countries are erecting wind turbines in the fields and off the coasts, switching from coal to natural gas, adding hydropower storage, and studying the next generation of nuclear reactors. One component common to all these efforts, though, remains mostly out of sight of the public, if not out of mind for electrical engineers working to...