Power Transformers & Electrical Substations

Power 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 Monitoring

Grounding Transformers Explained

By R. W. Hurst, Editor Grounding transformers are used to provide a path to ground for unbalanced load current and for fault currents on systems where a suitable ground is otherwise not available. Grounding transformers are normally constructed with one of the two configurations: Zig-Zag (Zn) with...

Why Net-Zero is Cheaper for the UK

The United Kingdom has set an ambitious target to achieve net-zero greenhouse gas emissions by 2050. This goal necessitates a comprehensive transformation of various sectors, including energy, transportation, and agriculture. While the environmental imperatives are clear, there is growing evidence...

Electrical Substations

Substation Automation

The Role of Renewable Energy in the Smart Grid: Transforming Power Generation, Transmission, and Distribution

The integration of renewable energy sources (RES) into smart grid systems represents a fundamental shift in how energy is generated, managed, and consumed. This transformation is vital for modernizing energy infrastructure, enhancing grid reliability, and fostering sustainability. The shift from a...

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

Protecting Electrical Sites with Intelligent Security Lighting

There are over 70,000 electrical substations in the United States. A simultaneous attack on several of them could destabilize the grid and cause widespread blackouts. But even a non-targeted event like vandalism or copper theft can also cause substantial damages, easily reaching into the tens of...

Home Transformation

Transformation

Transient Analysis of Power Transformers Using Finite Element Method

A transformer relies on electromagnetic induction through coils to transfer electric energy between two or more circuits. Varying current in the transformer’s primary winding creates varying magnetic flux in the core, which produces varying electromotive force (EMF) or voltage in the secondary winding. Accurately and efficiently predicting currents and voltages on the primary and secondary windings can be challenging, especially for cores with non-linear material properties. Fortunately, numerical modelling techniques such as the Finite Element...

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