Power Transformers & Electrical Substations

Power Transformers

Why event-based fault type identification is better than a sample-by-sample approach

Introduction Fault type identification is an important step in dissolved gas analysis (DGA). When a significant amount fault gas production is detected in a transformer, we want to know what kind of physical condition could be responsible for the gassing. Knowing the type of fault can help to...

Dielectric Fluids

The End of the Road for Transmission Incentives

In a significant shift, the Federal Energy Regulatory Commission (FERC) has decided to abandon its transmission incentives policy, particularly the construction work in progress (CWIP) incentives. This decision marks a pivotal change in how transmission projects are financed and regulated,...

Transformer Testing & Maintenance

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...

Electrical Substations

Substation Technologies

Ethernet Cable Selection for Utilities

Electric utilities are constantly searching for the most efficient, reliable and cost-effective methods to deliver electricity to customers. A vision for accomplishing this is the migration of the electrical grid from a reliable, but inflexible system to the Smart Grid, which promises adaptability...

Physical Security & Monitoring

FERC Conference Highlights Challenges in Resource Adequacy

The Federal Energy Regulatory Commission (FERC) recently hosted the Co-Located Load Conference, a significant event that focused on resource adequacy, energy reliability, and the challenges of ensuring sufficient electricity supply amidst changing grid dynamics. As the energy landscape continues to...

Physical Security & Monitoring

The Problem with Birds in Substation Outages

Birds have been a problem for electrical substations since the first power distribution systems were built. The elevated components of substations create ideal perches and overhangs for birds to nest and find safety. Critical electrical substation design principles now include deterrent elements...

Home Transformation

Transformation

Purchasing Reconditioned Electrical Equipment

Debunking the myths about tested and refurbished equipment

BY RISHI SUDAN, RS Electrical Supply

Extending the lifecycle of capital equipment such as 15-kilovolt circuit breakers, switchgear, and transformers through testing and reconditioning saves time and money by cutting down on new equipment purchases and eliminating associated downtime with major equipment replacement. However, many utilities doubt the reliability of reconditioned electrical equipment for a number of reasons. Many utilities believe that reconditioned equipment is not as...

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