Method and equipment for the protection of power systems against geomagnetically induced currents
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United States of America Patent
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Feb 10, 2009
Grant Date -
Sep 20, 2007
app pub date -
Nov 7, 2006
filing date -
May 10, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a method for protection of power transformers and other power system components, which are vulnerable to geomagnetically induced currents, which comprises feeding from an overhead line/s or cable conductor/s one or more DC-diverter consisting of primary diverter windings and compensation windings applied on a respective magnetic core leg, which diverter is connected to critical busses, and diverting “quasi” direct current flowing on the overhead lines or cable conductors as a result of the earth surface potential gradients caused by geomagnetically induced currents, as well as a DC diverter to carry out the method.
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