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Optimized decoupling and load shedding

  • US 10,476,268 B2
  • Filed: 02/09/2018
  • Issued: 11/12/2019
  • Est. Priority Date: 02/09/2018
  • Status: Active Grant
First Claim
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1. An intelligent electronic device (IED) for managing load shedding on a microgrid during an overload condition, comprising:

  • a communications interface to receive overload condition signals and send signals to manage load shedding;

    a contingency breaker in communication with the communications interface, wherein the contingency breaker trips based on user preferences; and

    a processor to;

    calculate, if the contingency breaker has tripped, a first power deficiency on the microgrid during the overload condition if the microgrid imports power from the utility and does not use incremental reserve margins of generators in the microgrid,calculate, if the contingency breaker has tripped, a second power deficiency on the microgrid during the overload condition if the microgrid uses the incremental reserve margins of the generators in the microgrid and does not import power from the utility,determine a first set of loads to shed based on the first power deficiency, and a second set of loads to shed based on the second power deficiency if the contingency breaker has tripped, andselectively implement a load shedding action based on one of the first and the second sets of loads to shed.

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