Electricity: electrical systems and devices – Safety and protection of systems and devices – Transformer protection
Reexamination Certificate
2006-11-07
2009-02-10
Sherry, Michael J (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
Transformer protection
Reexamination Certificate
active
07489485
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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A F Klercker Alakula Mats
Lindhal Sture
Clark Christopher J
Forskarpatent I Syd AB
Gauthier & Connors LLP
Sherry Michael J
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