Method and system employing graphical electric load categorization to identify one of a plurality of different electric load types
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United States of America Patent
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Sep 13, 2016
Grant Date -
Dec 11, 2014
app pub date -
Jun 7, 2013
filing date -
Jun 7, 2013
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Abstract
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.
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