Software Patches

August 26, 2025

Features and Improvements

  • Transient Stability: Added ability for writing a GENQEC model to the DYR format
  • Transient Stability: Added ability for reading and writing the GENQEJ model from and to the DYD and DYR formats
  • Transient Stability: Added ability for reading and writing the REEC_E model from and to the DYD and DYR formats. Model is named REECE in the DYR format.
  • Transient Stability: Added ability for reading and writing the REGCB1 model from and to the DYR format.
  • Transient Stability: Added ability to read from a DYR file a USRMDL named GENQEJU and convert to the GENQEJ standard library model
  • Transient Stability: Removed the transient stability option to "MVA Base for Input/Display of Generator Values". Values are now always entered on the generator MVA Base and can no longer be edited on the system MVA base.
  • Bug Fixes

    • Distributed Computation: Fixed an issue with distributed computer verification where computers that are unavailable remain marked as "Unknown".
    • Distributed Computation: When running script commands for contingency, ATC, QV, and transient stability analysis that allow the use of distributed computing an upfront check is now done to determine if any computers have been specified for use with distributed computing. If not an error results and analysis cannot continue until computers are specified. This error will also result if SimAuto has not been registered.
    • Optimal Power Flow (OPF): When loads do not have a benefit curve, they should be not dispatchable in the OPF. This bug has been corrected.