Power Transformers & Electrical Substations

Power Transformers

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...

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...

Transformer Monitoring

Advancements in Dissolved Gas Analysis: Accounting for Gas Loss

Dissolved gas analysis (DGA) in transformers is a very successful periodic screening method to identify transformers that may be having problems. It is a symptom-based assessment of health, rather than a condition-based assessment. That is because the gases themselves do not cause failure, but are...

Electrical Substations

Substation Automation

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

Most utility customers now pay an average price for electricity that changes little (if at all) over the course of the year. Average, flat-rate, real-time pricing is akin to a form of insurance, where a premium is paid to hedge against market volatility and price spikes. Yet this approach misses...

Physical Security & Monitoring

The Copper Theft Pandemic

Around the time of the financial crisis of 2008, precious metals pricing began to change drastically. Beginning in late 2007, a trend of price instability began to be seen for gold, silver, platinum, and (although not a precious metal in the traditional sense), copper. The price of all these metals...

Physical Security & Monitoring

Reducing Nuisance Alarm Rates from On-Site Security Systems

The physical security of electrical generation, transmission, and distribution sites is critical. The potential risks of a security failure are clear: disruption to service, damage to equipment, and intruder fatalities.To prevent costly incidents and meet the National Electrical Reliability...

Home Transformation

Transformation

The Smart Grid Prophecy

For years, industry publications have touted Smart Grid cost-benefit study results that show Smart Grid investments paying for themselves with reduced utility costs. The widely quoted report published by the Electric Power Research Institute, “Estimating the Costs and Benefits of the Smart Grid”, estimated benefits that are 2.8 to six times the cost of the Smart Grid investment.

According to these estimates and similar studies, Smart Grid investments are a perfect application...

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