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Security constrained optimal power flow method

  • US 6,775,597 B1
  • Filed: 03/19/1999
  • Issued: 08/10/2004
  • Est. Priority Date: 05/13/1998
  • Status: Expired due to Term
First Claim
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1. A security-constrained optimal power flow (OPF) method of operating a power system, comprising the steps of:

  • determining power flows for a base case operation and at least one contingency case operation of the power system;

    linearizing an optimal power flow (OPF) problem formulation;

    linearizing incremental network models for the base case and the at least one contingency case;

    determining a solution based on the linearized OPF problem and the linearized incremental network models;

    determining incremental control variables;

    updating control variables with the incremental control variables;

    determining power flows for the base case and the at least one contingency case using the updated control variables;

    comparing the incremental control variables to a preselected threshold value and if the incremental control variables exceed the threshold, then repeating the previous steps; and

    controlling the power system in accordance with the control variables.

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