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Method and system employing finite state machine modeling to identify one of a plurality of different electric load types

United States Patent

August 9, 2016
View the Complete Patent at the US Patent & Trademark Office
A system is for a plurality of different electric load types. The system includes a plurality of sensors structured to sense a voltage signal and a current signal for each of the different electric loads; and a processor. The processor acquires a voltage and current waveform from the sensors for a corresponding one of the different electric load types; calculates a power or current RMS profile of the waveform; quantizes the power or current RMS profile into a set of quantized state-values; evaluates a state-duration for each of the quantized state-values; evaluates a plurality of state-types based on the power or current RMS profile and the quantized state-values; generates a state-sequence that describes a corresponding finite state machine model of a generalized load start-up or transient profile for the corresponding electric load type; and identifies the corresponding electric load type.
Du; Liang (Atlanta, GA), Yang; Yi (Milwaukee, WI), Harley; Ronald Gordon (Lawrenceville, GA), Habetler; Thomas G. (Snellville, GA), He; Dawei (Beijing, CN)
13/ 908,263
June 3, 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.