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Method and system employing graphical electric load categorization to identify one of a plurality of different electric load types

United States Patent

9,442,999
September 13, 2016
View the Complete Patent at the US Patent & Trademark Office
A system for different electric loads includes sensors structured to sense voltage and current signals for each of the different electric loads; a hierarchical load feature database having a plurality of layers, with one of the layers including a plurality of different load categories; and a processor. The processor acquires voltage and current waveforms from the sensors for a corresponding one of the different electric loads; maps a voltage-current trajectory to a grid including a plurality of cells, each of which is assigned a binary value of zero or one; extracts a plurality of different features from the mapped grid of cells as a graphical signature of the corresponding one of the different electric loads; derives a category of the corresponding one of the different electric loads from the database; and identifies one of a plurality of different electric load types for the corresponding one of the different electric loads.
Yang; Yi (Milwaukee, WI), Du; Liang (Atlanta, GA), He; Dawei (Beijing, CN)
EATON CORPORATION (Cleveland, OH)
13/ 912,819
20140365490
June 7, 2013
This invention was made with Government support under DE-EE0003911 awarded by the Department of Energy National Energy Technology Laboratory. The Government has certain rights in this invention.