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Protection of power transformers against geomagnetically induced currents

Author(s): Gurevich Vladimir

Journal: Serbian Journal of Electrical Engineering
ISSN 1451-4869

Volume: 8;
Issue: 3;
Start page: 333;
Date: 2011;
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Keywords: solar storm | magnetosphere | geomagnetic induced current | ionosphere | transformer saturation | relay protection

The article examines the problem of saturation and failure of power transformers under geomagnetically induced currents and currents of the E3 component of high-altitude nuclear explosions. It also describes a special protective relay reacting on DC component in the transformer neutral current.
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