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Systems and methods for data compression and feature extraction for the purpose of disaggregating loads on an electrical network

  • US 8,924,604 B2
  • Filed: 04/11/2012
  • Issued: 12/30/2014
  • Est. Priority Date: 09/26/2011
  • Status: Active Grant
First Claim
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1. A method of detecting electrical power usage of one or more electrical devices coupled to an electrical power line carrying an alternating current with a predetermined period, the one or more electrical devices place one or more distinguishable intrinsic noise sources on the electrical power line superimposed on the alternating current, the method comprising:

  • using a data acquisition device to acquire first data about the alternating current and the one or more distinguishable intrinsic noise sources on the electrical power line such that the acquiring of the first data is synchronized with the predetermined period of the alternating current;

    processing the first data to create frequency domain data; and

    applying a feature extraction algorithm to the frequency domain data to determine a transition of an electrical power state of at least a first one of the one or more electrical devices,wherein;

    the transition of the electrical power state of at least the first one of the one or more electrical devices comprises at least one of (1) a turning on of at least the first one of the one or more electrical devices, (2) a turning off of at least the first one of the one or more electrical devices, or (3) a varying of an amount of power consumed by at least the first one of the one or more electrical devices.

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