Software Patches

April 20, 2018

Features and Improvements

  • Transient Stability: Modified DER_A model by adding two new parameters Iqh1 and Iql1 as limits on the extra reactive current injection path.
  • Bug Fixes

    • Auxiliary Files (SCRIPT and DATA Sections): Fixed access violation that could occur when trying to change the filter for an object type in an Aux Export Format Description.
    • Power Flow Solution: Fixed a bug in which super area AGC was not disabled when the super area spans multiple islands that contain more than one super area or areas that are not in the super area.
    • Transient Stability: Result Events in Transient stability related to the Distribution Equivalent Model which relate to the LTC1 model on the transformer switching the result even object was being reported as a blank. This was because this is for the internal transformer which is created only inside the transient stability simulation. We will now report the Load object's identification to indicate where the LTC1 model is coming from.