Electrical Transformers
Designing A Safe & Reliable Transformer Maintenance Program
Zensol new instrument for OLTC testing
Electrical 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...
Related Articles

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...

The importance of risk assessment and the role of Reliability-based DGA
By Chuck Hoeppner, Delta-X Research It’s often said that you can’t manage what you can’t measure. But how does one manage risk in the mission-critical, 24x7 world of energy utilities? It’s a challenging undertaking, anticipating future demands and ensuring the reliability...

The Dissolved Gas Analysis Toolkit
Dissolved gas analysis: addressing the challenges of collecting samples BY DONAL SKELLY, GE’s Digital Energy business Dissolved gas analysis (DGA) is a technique for identifying and quantifying the gas formed in oil-filled electrical equipment because of either the natural aging of oil and paper...

Transformer Diagnostic Testing
Transformer diagnostic testing: standards to diagnose equipment with Sweep Frequency Response analysis BY VOLNEY NARANJO, Megger Sweep Frequency Response Analysis (SFRA) has become a powerful tool in advanced power transformer assessments and probably one of the main and first tools used to...

The Role of Transformer Oil Alternatives in Improving Safety and Environmental Sustainability
The Growing Need for Safer and Greener Transformer Oils Transformer oil plays a vital role in the operation and longevity of power transformers, providing insulation, cooling, and arc suppression. Traditionally, mineral oil has been the industry standard due to its effective dielectric properties...

Enhancing Transformer Resilience: Fire Barriers and Safety Measures in Modern Substations
The Growing Concern of Transformer Fire RisksTransformers are critical components 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 to extreme weather...

Navigating the Transformer Supply Crunch: Strategies for Utilities Amidst Global Shortages
The Growing Transformer Supply Crisis The global transformer supply chain is facing unprecedented challenges, with utilities worldwide struggling to procure essential equipment due to material shortages, manufacturing delays, and logistical constraints. Transformers are the backbone of electrical...

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...

Transmission Construction Industry Leader Retires and Sells at Absolute Auction!
S.E., Inc. has been providing the very best in Transmission Powerline Construction for over (40) years throughout the Western United States. Brothers Mark, Steve, David, and Craig Sorenson have decided to retire and pursue other interests. Everything in the auction is owned by S.E., Inc. and will...

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...