Software Patches

June 4, 2024

Features and Improvements

  • Case Information Displays: Added a generator MW range percentage used (MWRangePercent). This calculates the percentage of the entire range, namely: MWRangePercent = (MW - MinMW) / (MaxMW - MinMW)
    This ensures that negative MinMW values actually expand the range instead of being ignored like with the traditional MWPercent field.
  • Oneline Diagrams: Added the ability to select an angle from which pie chart/gauge styles start filling pie charts and the direction in which they fill.
  • Time Step Simulation: In the Time Step Simulation tsb files can be saved and loaded if they have custom save fields defined even with no time points. This was added to allow a tsb file to be defined for a case and then used to load potentially many pww files. There is also now a tsb option that specifieds whether custom result fields are cleared on a pww file load; the default is to not clear them. Another new option indicates the default solution type when loading pww files; the default is Apply Only (with Weather Update).
  • Transient Stability: For exciter model IEEET2, VE is now available as a signal in the "Exciter Other" folder in transient stability plot designer.
  • Transient Stability: Added parameters ImovTup and IcapTup to the SCMOV model to provide a definite time pickup timer to the Imovlim and Icaplim pickup levels. These were added to help avoid having hte model respond to numerical simulation spikes in current that last only one timestep. Ideally these timer will be set very low, but non-zero.
  • Bug Fixes

    • File Formats: When loading in substation data in a RAW file, node voltages and angles might be specified. We had been ignoring these values, but not they are applied. This seems to help greatly with the power flow solution.