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...

Substation Protection

Utilizing Fault Resistance to Test Distance Relays

Taking power grid protection to an all-new level BY JASON BUNEO & RENE AGUILAR, Megger The testing of distance relays has evolved from testing simple electromechanical relays to the newest modern microprossesor relays. Most modern relays employ advanced algorithms that not only compare the...

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...

Breakers & Relays

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 relaying schemes depend on ground distance protection to accurately sense and locate ground faults on multi-terminal sub-transmission...

Substation Testing & Maintenance

Power Transformer Failures

Electric utilities maximize utilization of their assets, while maintaining reliability. Power transformers are typically reliable, but have been known to fail suddenly and/or prematurely. Transformer failures are both costly and can leave customers dissatisfied, harming the reputation of a utility....

Substation Technologies

Grid Communications Infrastructure: Fiber, Wireless, and Networking Technologies

Reliable and secure communication infrastructure is essential to the safe and efficient operation of the modern power grid. As utilities transition to digital substations, integrate distributed energy resources (DERs), and deploy real-time monitoring systems, the need for robust, scalable grid...

Home Transformation Electrical Substations

Future-proofing Substations with Ethernet Technologies

Nine steps to help develop a future-proof infrastructure for your substation

BY TIM WALLAERT, Belden

Substations with Ethernet technologies: the convergence of industrial Ethernet technologies, Smart Grid practices and the increased need for security has provided an opportunity for power utilities to rethink their operating strategies. The results are innovative ways to integrate the new and the old in order to position themselves for the future. The substation is at the heart of this change....

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