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:
Jun. 27, 2006
Filed:
Dec. 09, 2002
Marek Zima, Baden, CH;
Christian Rehtanz, Baden-Dättwil, CH;
Marek Zima, Baden, CH;
Christian Rehtanz, Baden-Dättwil, CH;
ABB Research Ltd, Zurich, CH;
Abstract
In a method, computer program and system for estimating a state of an electric power transmission network, time-stamped phasor measurements are made by phasor measurement units () located at a first set of locations () throughout the network, and a plurality of voltage and/or current phasors at a second set of locations is estimated, where the locations of the first () and second sets of locations are distant from one another, and a status of network elements (L,L) that are remotely located from the phasor measurement units is inferred from the phasor measurements and the estimated phasors. In a preferred variant of the invention, the network elements are transmission lines (L. . . L), switchgear, under load tap changing transformers, compensation devices () or FACTS devices, and the status information describes whether a network element (L,L) is electrically connected to or disconnected from the network.