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:
Apr. 29, 2014
Filed:
Feb. 06, 2012
Bertil Berggren, Vasteras, SE;
Rajat Majumder, Raleigh, NC (US);
Swakshar Ray, Vasteras, SE;
Balarko Chaudhuri, London, GB;
Nilanjan Ray Chaudhuri, London, GB;
Bertil Berggren, Vasteras, SE;
Rajat Majumder, Raleigh, NC (US);
Swakshar Ray, Vasteras, SE;
Balarko Chaudhuri, London, GB;
Nilanjan Ray Chaudhuri, London, GB;
ABB Research Ltd., , CH;
Abstract
A method, device and computer program product for providing improved control of power or voltage oscillation damping in a power transmission system. The device includes a magnitude obtaining element configured to obtain an instantaneous magnitude of a signal representing a deviating oscillation in at least one element of the power transmission system, a slope investigating element configured to determine the rate of change of the signal, and a first processing block including an integrating element configured to integrate the instantaneous magnitudes with an integrating factor that is based on the determined rate of change. The first processing block is further configured to form a phase compensation angle based on the integrated instantaneous magnitude for use in a damping control signal generating unit in order to provide power or voltage oscillation damping of the system.