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Power grid failure detection system and method

  • US 7,490,013 B2
  • Filed: 12/08/2004
  • Issued: 02/10/2009
  • Est. Priority Date: 12/09/2003
  • Status: Active Grant
First Claim
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1. A power grid monitoring system comprising:

  • at least one power line sensor, each sensor measuring frequency of alternating current carried by the power grid; and

    an analysis block, the analysis block processing data gathered by the at least one sensor, the analysis block determining instability in the power grid,where the analysis block converts sensor data from a time based domain to a frequency domain,where the analysis block identifies peaks in the frequency domain,where identified peaks with dampening ratios less than 0.7 indicate grid instability.

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