Software Patches

September 16, 2021

Features and Improvements

  • Transient Stability: Modified REEC_D model so that the Thld2 parameter acts to freeze the value of Ipcmd instead of the value of Ipmax as is done in REEC_A model.
  • Transient Stability: Added the ability to read and write models ESST1C and ESST4C to a dyd file. The equivalent models in PowerWorld are ESST1C = ST1C and ESST4C = ST4C.
  • Bug Fixes

    • Transient Stability: There is a bug that resulted in an Access Violation if you try to right click the Signals table with no signals in the table in the Modal Analysis Form in Transient stability.
    • Transient Stability: Removed harmless but confusing event reporting in transient stability for out-of-service DC transmission line dynamic models.
    • User Interface Dialogs: Fixed inconsistencies when changing between per unit and percentage voltage changes when using the options to never report or always report voltage violations with contingency analysis.