Software Patches

July 10, 2012

Features and Improvements

  • PV and QV Curve (PVQV) Tool: Added the option to plot pre-contingency values on the horizontal axis with the "New Plots" used with the PV tool.
  • PV and QV Curve (PVQV) Tool: Import and Export can now be plotted on the horizontal axis with the "New Plots" used with the PV tool.
  • Transient Stability: Optimized MOTORW model to increase simulation speed slightly.
  • Bug Fixes

    • General: Deleting MW Transactions while in Run Mode could cause access violations. This has been fixed.
    • PV and QV Curve (PVQV) Tool: Added PV messages to indicate that a source or sink injection group has no participation points when it is empty rather than indicating that the points in the group are not in the same island.
    • Transient Stability: The fix in the 6/26/12 patch to fix access violations caused by showing a Results grid with open generators caused a problem that would end up showing blank entries for the state variables in the Results grid. This has been fixed.
    • Transient Stability: Fixed problem with extra blank lines being written to the message log during validation.
    • Transient Stability: Fixed a problem with the PDCI model which could cause the simulation to crash in some situations.
    • Transient Stability: Set the high end of the valid voltage range correctly when determining if a switched shunt is within range or if it might need to switch.
    • Transient Stability: Report zero for a switched shunt's nominal Mvar if the shunt is not inservice.