Software Patches

February 27, 2025

Features and Improvements

  • Transient Stability: Added a new load relay named LRDT9. This relay will restore load if frequency goes above a certain threshold (Overfrequency relay). It will only restore load up to the original load amount before the transient simulation. The relay has 9 stages.
  • Bug Fixes

    • Auxiliary Files (SCRIPT and DATA Sections): When using special @ keywords inside Auxiliary scripts for use in specifying file names, PowerWorld would eliminate invalid Windows filename characters. This same check was not being done when using the @ keywords when a Windows directory was specified. This has been fixed.
    • Case Information Displays: Modified the Custom Case Info spreadsheets inside Simulator to properly handle whether a field was enterable or not. This was not working properly in general and was also never obeying the feature with DataMaintainer object to prevent editing of fields in the GUI based on the DataMaintainer.
    • File Formats: When exporting a CON file added an extra END statement at the end of the file to indicate the file was finished. The only purpose was to eliminate a warning message when loading the CON file into PSS/E