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Fault location using traveling waves

  • US 8,655,609 B2
  • Filed: 10/12/2012
  • Issued: 02/18/2014
  • Est. Priority Date: 10/12/2011
  • Status: Active Grant
First Claim
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1. A receiving intelligent electronic device (IED) configured to calculate a fault location in electric power delivery system based on a traveling wave created by an electrical fault in the electric power delivery system, the receiving IED comprising:

  • a communications port;

    control logic in communication with the communications port, the control logic configured to;

    detect a transient traveling wave caused by an electrical fault by using a plurality of data samples representing measurements of a parameter of the electric power delivery system;

    detect a first value of the transient traveling wave;

    detect a first time associated with the first value;

    receive via the communication port a second time associated with a second value of the transient traveling wave detected by a remote IED located at a known distance from the receiving IED; and

    generate an estimated fault location based on the time difference between the first time and the second time.

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