# US 2013/0159756 A1 · Methods And Systems For Blind Analysis of Resource Consumption

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- Number: US 2013/0159756 A1
- Document ID: US20130159756A1
- Status: Published application
- Kind: A1
- Application number: 13/634,568
- Filed: 2011-03-17
- Published: 2013-06-20
- Earliest claimed: 2010-03-17
- Inventors: Daniel P.W. Ellis
- Web page: https://patentgrep.com/patent/US20130159756A1

## CPC

- G06F 1/28: Supervision thereof, e.g. detecting power-supply failure by out of limits supervision
- H02J 3/00: Circuit arrangements for AC mains or AC distribution networks
- G01D 2204/24: Identification of individual loads, e.g. by analysing current/voltage waveforms
- H02J 2105/61: {Load identification}
- Y04S 20/30: Smart metering, e.g. specially adapted for remote reading
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- G01D: MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- Y04S: SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS

## Abstract

Methods and systems for analyzing gross resource consumption data to determine resource consumption of individual devices are disclosed. In some embodiments, the methods and methods include the following: obtaining a first data that includes a time series of a gross resource consumption for a location; using blind signal separation techniques, identifying power-on and power-off events within the first data, the events being caused by turning particular devices at the location on and off during the time series and each of the events reflecting a power consumption signature for each of the particular devices; associating each of the events with a known device, the known device being substantially similar to one of the particular devices at the location; and determining a portion of the gross resource consumption consumed by each of the particular devices.

## Claims

### Claim 1

A method of analyzing gross resource consumption data to determine resource consumption of individual devices, said method comprising:
obtaining a first data that includes a time series of a gross resource consumption for a location;
using blind signal separation techniques, identifying power-on and power-off events within said first data, said events being caused by turning particular devices at the location on and off during said time series and each of said events reflecting a power consumption signature for each of said particular devices;
associating each of said events with a known device, said known device being substantially similar to one of said particular devices at the location; and
determining a portion of said gross resource consumption consumed by each of said particular devices.

### Claim 2 (depends on 1)

The method of claim 1, wherein associating each of said events with a known device further comprises matching said power consumption signatures of said particular devices with substantially similar known power consumption signatures of known devices.

### Claim 3 (depends on 1)

The method of claim 1, wherein associating each of said events with a known device further comprises:
providing power consumption signatures of said devices at the location; and
matching said power consumption signatures of said particular devices with substantially similar power consumption signatures of said devices at the location.

### Claim 4 (depends on 1)

The method of claim 1, wherein said portion of said gross resource consumption consumed for each of said particular devices is calculated using a duration of its event and known average resource consumption data for each of said associated known devices.

### Claim 5 (depends on 1)

The method of claim 1, wherein a majority of said plurality of devices have substantially stationary resource consumption a majority of the time.

### Claim 6 (depends on 1)

The method of claim 1, wherein a majority of said plurality of devices turn on or off without synchronization to any other of said plurality of devices.

### Claim 7 (depends on 1)

The method of claim 1, further comprising:
evaluating said events; and
where two or more of events are substantially similar, adding a resource consumption identifier to one or more of said devices to differentiate its resource consumption signature from said resource consumption signatures of other devices.

### Claim 8 (depends on 1)

The method of claim 1, wherein said resource is one of electricity and water.

### Claim 9

A system for analyzing gross resource consumption data to determine resource consumption of individual devices, said system comprising:
a power consumption measurement module for obtaining a time series of a gross resource consumption for a location, said time series including resource consumption of a plurality of devices at the location, said time series representing a first data;
a power consumption database including resource consumption signatures for each of said plurality of devices and known average resource consumption data for each of said plurality of devices, said resource consumption signatures representing a second data; and
a power consumption analysis module for using blind signal separation techniques to analyze said first and second data to develop a sequence of events each of which are attributed to one of said plurality of devices, said sequence comprising a third data, and using said third data, determining a portion of said gross resource consumption consumed by each of said plurality of devices.

### Claim 10 (depends on 9)

The system of claim 9, further comprising:
a resource consumption marker module including resource consumption identifiers for adding to devices to enhance their resource consumption signatures.

### Claim 11 (depends on 9)

The system of claim 9, wherein said resource consumption signature is based on a measurement of resource consumption by each of said plurality of devices vs. time when it turns on or off

### Claim 12 (depends on 9)

The system of claim 9, wherein said portion of said gross resource consumption consumed for each of said plurality of devices is calculated using said third data and said known average resource consumption data for each of said plurality of devices.

### Claim 13 (depends on 9)

The system of claim 9, wherein a majority of said plurality of devices have substantially stationary resource consumption a majority of the time.

### Claim 14 (depends on 9)

The system of claim 9, wherein a majority of said plurality of devices turn on or off without synchronization to any other of said plurality of devices.

### Claim 15 (depends on 9)

The system of claim 9, wherein at least one of said plurality of devices is a household appliance.

### Claim 16 (depends on 9)

The system of claim 9, wherein said resource is one of electricity and water.

### Claim 17

A metering apparatus for analyzing gross resource consumption data to determine resource consumption of individual devices, said apparatus comprising:
a housing;
a mechanism for connecting said apparatus with a location for obtaining a first data that includes a time series of a gross resource consumption for said location, said time series including resource consumption of a plurality of devices at said location;
a computer processor;
a database in communication with said computer processor, said database including resource consumption signatures for each of said plurality of devices and known average resource consumption data for each of said plurality of devices, said resource consumption signatures and said known average resource consumption data representing second and third data, respectively; and
a computer-readable medium having the following computer-executable instructions that are executed by said computer processor:
using blind signal separation techniques, analyzing said first and second data to develop a sequence of events each of which are attributed to one of said plurality of devices, said sequence comprising a fourth data; and
using said third and fourth data, determining a portion of said gross resource consumption consumed by each of said plurality of devices.

### Claim 18 (depends on 17)

The apparatus of claim 17, wherein said resource consumption signature is based on a measurement of resource consumption by each of said plurality of devices vs. time when it turns on or off.

### Claim 19 (depends on 17)

The apparatus of claim 17, wherein said resource is one of electricity and water.

### Claim 20 (depends on 17)

The apparatus of claim 17, wherein at least one of said plurality of devices is a household appliance.