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:
Mar. 12, 2019
Filed:
Feb. 28, 2014
Psymetrix Limited, Edinburgh, Lothian, GB;
Douglas Wilson, Edinburgh, GB;
Natheer Al-Ashwal, Edinburgh, GB;
PSYMETRIX LIMITED, Edinburgh, GB;
Abstract
The present invention relates to apparatus () for determining a contribution of at least one grid subsystem of plural grid subsystems to oscillation in angle or grid oscillation in an electrical grid (). The apparatus () is configured to receive a first quantity which corresponds to oscillation in angle at a first grid subsystem (). The apparatus () is also configured to receive a second quantity which corresponds to oscillation in angle at a second grid subsystem (). The apparatus () comprises a processor () which is operative to determine a contribution of at least one of the first and second grid subsystems to oscillation in angle or grid oscillation with the contribution being determined in dependence on a phase relationship between the first and second quantities.