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SYSTEM AND METHOD FOR DETECTING A GRID EVENT

  • US 20140152331A1
  • Filed: 11/30/2012
  • Published: 06/05/2014
  • Est. Priority Date: 11/30/2012
  • Status: Active Grant
First Claim
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1. A method to detect a grid event comprising:

  • sampling grid voltage and grid current over a fixed period of time;

    determining grid impedance at one or more frequencies using the sampled grid voltage and the sampled grid current; and

    comparing the grid impedance at the one or more frequencies to a known expected grid impedance at the one or more frequencies; and

    detecting a grid event based on the comparison.

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