Software Patches

August 29, 2018

Features and Improvements

  • Transient Stability: Added new OEL1B overexcitation limiter model.
  • Bug Fixes

    • Contingency Analysis: Fixed field descriptions for the contingency options for specifying the maximum number of contingencies to select based on branch, interface, bus, and buspair rankings.
    • Contingency Analysis: When using Screening options with contingency analysis, contingencies were being selected for running full AC analysis based on rank values of 0. For example, if a case has no interfaces, the interface rank would be 0 for all contingencies. Contingencies were still being selected based on the "maximum number to select" option for interfaces. The same problem existed for the other screening categories. This has been fixed and any contingency with a rank of zero for the category being processed will not be included.
    • Transient Stability: When reading a DYD record for a branch, PowerWorld was expecting at least 10 fields in the beginning of the record to define the branch. If these fields were missing an an error would occur. This has been fixed and the record is just ignored in this situation.