Software Patches

August 20, 2021

Bug Fixes

  • Transient Stability: Any OEL connected to Exciter ESST4B now has the ability to automatically modify the VOEL output so that initial limit violation can be prevented when the "Modify Limits" option is chosen in Transient Stability options. This modification will only occur if an OEL can initialize to Activation Status = Idle.
  • Transient Stability: When Qref=0 for OEL4C, internally the program sets Qref to current Qmax from the power flow records. This was already being done. However, for generators that have an internal step up transformer, Qmax needed to be transformed to the generator terminal-side. This modification has now been made.
  • Transient Stability: Bug fix for generating plots of fields only if they are stored in Hard Drive (storing to RAM is okay). Users might have observed that incorrect values were being plotting fields of certain devices. For example, plotting the "OEL Other 1" field for a Generator which does not actually have an OEL Active. The correct behavior is to not show any plot series on the generated plot, because the field itself does not exist for that generator. This issue is now fixed.