skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

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

Patent ·
OSTI ID:1288657

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.

Research Organization:
EATON CORPORATION, Cleveland, OH (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
EE0003911
Assignee:
EATON CORPORATION (Cleveland, OH)
Patent Number(s):
9,410,996
Application Number:
13/908,263
OSTI ID:
1288657
Resource Relation:
Patent File Date: 2013 Jun 03
Country of Publication:
United States
Language:
English

References (11)

Non-intrusive appliance monitor apparatus patent August 1989
Transient event detector for use in nonintrusive load monitoring systems patent January 1996
Multiprocessing transient event detector for use in a nonintrusive electrical load monitoring system patent February 1998
Device for preventive detection of faults with recognition of the type of load patent June 1999
Device for preventive detection of faults with identification of the type of load patent June 2000
Digital linear voltage regulator patent March 2010
Detecting actuation of electrical devices using electrical noise over a power line patent-application March 2009
System and Method Employing a Hierarchical Load Feature Database to Identify Electric Load Types of Different Electric Loads patent-application May 2013
Fault identification using a finite state machine model with unreliable partially observed data sequences journal July 1993
Correcting dependent errors in sequences generated by finite-state processes journal July 1993
A review of identification and monitoring methods for electric loads in commercial and residential buildings conference September 2010