Software Patches

August 30, 2010

Features and Improvements

  • Oneline Diagrams: Added ability to export a oneline diagram as a GIF image.
  • Oneline Diagrams: Added ability to export a oneline diagram as an animated GIF image (animated the arrows and generator rotors).
  • Transient Stability: Added toolbars to the generator's SMIB dialog which shows details on the generator eigenvalues.
  • Transient Stability: Modified the labels on the axis to change format by default as appropriate. Thus if the absolute value of minimum and maximum values are both less than 0.01 it will automatically switch to scientific notation. This will also happen if both min/max are either greater than 10,000 or less than -10,000.
  • Transient Stability: Added ability to store results for the apparent power at the from and to ends of a branch.
  • Transient Stability: When choosing to store results to the Hard Drive, previously if no directory was specified to which results should be saved then results would not be saved to hard drive at all. Now if the directory is blank, Simulator will default to save data in the same directory as the case was loaded from. Note that if an invalid directory is specified it will still not save results.
  • Transient Stability: Modified the generator fields for Maximum Frequency and Minimum Frequency to show actual frequency instead of the deviation from nominal.
  • Bug Fixes

    • Contingency Analysis: Fixed potential access violation when using Advanced Limit Monitoring to look for voltage deviation violation in percentage instead of per unit.
    • Distributed Computation: Under some circumstances, distributed computation could freeze at the end of a distributed run (either contingency or ATC). This has been fixed.
    • PV and QV Curve (PVQV) Tool: In the "New Plots" features if you have defined a value to contained in a plot it is automatically stored as part of the result while running the PV tool. However, when choosing to plot a bus dV/dQ value, the value was not being tracked properly with this new feature. This has been fixed.
    • Sensitivity Calculations: Fixed error in performing AC TLR sensitivities which was caused by a bug introduced in the speed enhancement from July 23, 2010