Software Patches

March 6, 2026

Features and Improvements

  • Oneline Diagrams: Modified Default Drawing Values so that a font color can be specified for different Nominal voltage kV levels with various objects. Previously you could specify a Font Size that was different by voltage level, but all inserted fonts were the same color.
  • Bug Fixes

    • Auxiliary Files (SCRIPT and DATA Sections): A change that was made in the 1/26/26 patch could affect how branches are found when identified by bus name_nomkV. This bug has been fixed.
    • Oneline Diagrams: Fixed the dialog box when choosing on a oneline to Auto-Insert -> Reset Stub Locations. It was showing a "Do not Insert Pie Charts" check box which it should not have been
    • Power Flow Solution: When two phase shifters are in series, and one is already at a limit, it caused the other phase shifter to back off its limit and reattempt to regulate the flow. More generally, for any phase shifter, backing off a phase limit is only desirable when the phase min (or max) limit is exceeded, as well as the actual flow is greater (or less) than the regulated flow middle. The observed issue was that phase shifter oscillations led to a phase shifter regulation error message for the DC power flow, even though the DC power flow had already reached a good solution. This modification prevents an unnecessary error being produced during a DC power flow solution.
    • Security Constrained OPF (SCOPF) Tool: When solving SCOPF/OPF with interfaces monitored in both directions, the corresponding entries in the simplex linear program were incorrect. This led to odd enforcement of interfaces that were monitored in both directions. This is fixed.