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Power Transformers




Utility Transformers

How to Improve Transformer Protection

Using symmetrical components for fault discrimination in differential protection BY IMRAN RIZVI, ABB Inc. Classical differential protection schemes are subject to ghost differential currents due to current transformer (CT) saturation and magnetization currents. Several methods are used to counter...

Electrical Substations



Physical Security & Monitoring

Animal Mitigation for Electric Utilities

Prevent animal- and bird-caused outages to improve reliability BY MARTY NILES, Cantega Technologies Utilities in North America are under enormous pressure from regulators, customers, and investors to improve reliability performance. Many of the mergers and acquisitions of utilities around North...

Transformation

SCADA for Substations

How new technologies can improve monitoring and control

BY LOURENCO TEODORO, InduSoft

Substations are a critical component for maintaining electrical supply and load control in low voltage, medium voltage and high voltage electrical distribution networks. In order to ensure the proper functioning of substations and related equipment such as line-mounted switches and capacitors, most utilities use SCADA (supervisory control and data acquisition) systems to automate monitoring and control.

New sites typically implement a SCADA...

Transformation Articles