Title:
METHOD AND EQUIPMENT FOR THE PROTECTION OF POWER SYSTEMS AGAINST GEOMAGNETICALLY INDUCED CURRENTS
Document Type and Number:
WIPO Patent Application WO/2005/109593
Kind Code:
A1
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 (11, 12, 13) and compensation windings (14, 15, 16) 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.
Inventors:
AF KLERCKER ALAKUELA MATS (SE)
LINDAHL STURE (SE)
LINDAHL STURE (SE)
Application Number:
PCT/SE2005/000659
Publication Date:
November 17, 2005
Filing Date:
May 04, 2005
Export Citation:
Assignee:
FORSKARPATENT I SYD AB (SE)
AF KLERCKER ALAKUELA MATS (SE)
LINDAHL STURE (SE)
AF KLERCKER ALAKUELA MATS (SE)
LINDAHL STURE (SE)
International Classes:
H01F27/38; H02H9/00; H01F27/34; H01F30/12; H02J; (IPC1-7): H02H9/00
Foreign References:
| EP0511417A1 | 1992-11-04 | |||
| US5406437A | 1995-04-11 |
Attorney, Agent or Firm:
VALEA AB (Göteborg, SE)
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