Software Patches

May 28, 2025

Features and Improvements

  • Transient Stability: For the IEEEG1_GE and IEEE_G3_GE models, a negative db2 parameter has always been treated as a 0.0 deadband. A warning message has been added to alert the user this is happening.
  • Bug Fixes

    • Transient Stability: For non-linear gain look up tables in Governor models (for the gate position signal), additional checks have been added. Previously when all GV AND PGV values were 0.0, then the non-linear gain block was ignored and a fixed gain of 1.0 was used. Additional checking is now done so that if all GV values 0.0 then the non-linear gain block is also ignored. Also, if all PGV values are 0.0 then the non-linear gain block is ignored.