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Automatically configurable intelligent electronic device

  • US 10,261,567 B2
  • Filed: 05/15/2014
  • Issued: 04/16/2019
  • Est. Priority Date: 05/21/2013
  • Status: Active Grant
First Claim
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1. A system for monitoring an electric power delivery system that includes a power line, comprising:

  • a local intelligent electronic device (IED) in communication with a local portion of the power line obtaining local electric power system measurements and configured to monitor the local portion of the power line by determining a state of the local power line using predetermined configuration settings and electric power system measurements;

    a remote IED in communication with a remote portion of the power line obtaining remote electric power system measurements;

    a communication system in communication with the local and remote IEDs for transmitting the local and remote power system measurements;

    a configuration event module configured to receive the local and remote power system measurements, determine that the power line is loaded, and when it is determined that the power line is loaded, command a single pole to open to establish an unbalance condition on the electric power delivery system, issue a single-pole close command for the open pole;

    a configuration parameters module configured to receive the local and remote power system measurements and, when the power line is loaded, calculate, using the local and remote power system measurements obtained during the unbalance condition, a symmetrical component impedance of the power line from the local portion to the remote portion; and

    ,a configuration settings module configured to calculate a plurality of protective element settings based on the calculated symmetrical component impedance of the power line, the protective element settings for use by the local TED to update the predetermined configuration settings for monitoring of the local portion of the power line.

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