The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 04, 2008
Filed:
Dec. 22, 2004
Hans Christian Christensen, Copenhagen, DK;
Lars Gertmar, Västerås, SE;
Sture Lindahl, Lund, SE;
Juhani Mantere, Tuusula, FI;
Erik Koldby Nielsen, Odense, DK;
Leif-erik Wraae, Tommerup, DK;
Hans Christian Christensen, Copenhagen, DK;
Lars Gertmar, Västerås, SE;
Sture Lindahl, Lund, SE;
Juhani Mantere, Tuusula, FI;
Erik Koldby Nielsen, Odense, DK;
Leif-Erik Wraae, Tommerup, DK;
ABB Research Ltd., Zürich, CH;
Abstract
A device for controlling at a fault condition. An apparatus is connected by a connection line to a grid point of a transmission net in an electric power network. A voltage raising apparatus includes a first branch connected to the grid point including a switching element and a second branch including a current resisting means. The voltage raising apparatus includes a computer for signal processing of a sensed fault condition on the network and for affecting the operation of the switching element such that on a fault condition at least part of the current is diverted through the voltage raising apparatus and for evaluation of further actions.