Software Patches

November 23, 2010

Features and Improvements

  • Auxiliary Files (SCRIPT and DATA Sections): Added new script command to find branches that create islands.
  • Transient Stability: Added a new option to specify the type of saturation function to use for an exciter model. Choices are Quadratic, Scaled Quadratic, or Exponential.
  • Transient Stability: When loading a PSLF DYD file, modified to specify that the Quadratic exciter saturation function be used.
  • Transient Stability: When loading a PSS/E DYR file, modified to specify that the Scaled Quadratic exciter saturation function be used.
  • Transient Stability: When loading a IPF SWI file, modified to specify that the Exponential exciter saturation function be used.
  • Transient Stability: Modified the captions of plots to use identifiers as specified by the "Identify Buses in Events and Results by" option.
  • Bug Fixes

    • File Formats: When loading the HDB Export CSV file format, the custom strings for ZBR records were not saving the Line ID.
    • Integrated Topology Processing (ITP): After saving a case as a consolidated case, access violations could result if Calculated Fields existed. The case was saved correctly, but the the process of saving could corrupt the existing case in memory. This has been fixed.
    • Power Flow Solution: When using the feature on the MW Transactions table to choose to "Clear Transactions and Auto-Insert Tieline Transactions", if one of the multiterminal DC Converters was acting as a tie-line, then the resulting transaction totals were incorrect. This has been fixed.
    • Transient Stability: Fixed a bug when writing out a GE DYD file which contained a PIDGOV governor. If one of these governors existed, then writing out the DYD file would cause the program to halt.