Software Patches

May 29, 2018

Features and Improvements

  • Auxiliary Files (SCRIPT and DATA Sections): Adding script support for named system states. StoreState now takes an optional "StateName" parameter, and RestoreState has an optional second parameter for the State Name to be restored (which is ignored if the first parameter is not USER).
  • Contingency Analysis Tool: Added Arming Criteria to the list of dependencies for Remedial Actions and Remedial Action Elements.
  • Transient Stability: Added ST2C Exciter.
  • Transient Stability: Added ST3C Exciter
  • Transient Stability: Modified how the list of available transient stability model types is displayed when choosing to only "Show Models Supported By" a particular software tool. Starting in Version 20 we would also show models that can be translated to that software tool. This patch changes it so it only shows models natively supported in that tool.
  • Bug Fixes

    • General: Fixed a bug where the link on the license unlock form sent the user to the wrong web page.
    • General: Changed licensing timeouts so that they should happen much less frequently. Licensing should initialize successfully on systems under higher resource contention.
    • Integrated Topology Processing (ITP): When saving a consolidated case to file, breakers are closed so that switched shunts end up on a common bus so that they can be merged into blocks if desired. During the process of closing the breakers, the voltages of the switched shunt buses that had previously been dead were sometimes not getting set to a good voltage estimate. This could result in a failed power flow solution for the consolidated case. A better voltage estimate is now set for the switched shunt buses that have just been connected.
    • Integrated Topology Processing (ITP): When saving a consolidated case and using the option to merge switched shunts into blocks, the Auto Control option will be set to yes if any of the merged shunts is on auto control.
    • Integrated Topology Processing (ITP): When saving a consolidated cased to file and using the option to merge switched shunts to blocks, the numbers of steps in a block could be incorrect. This has been fixed.
    • Oneline Diagrams: Fixing an issue with loading in multiple top level menus for the Oneline Viewer with the WebFG menu importer that caused duplication of the top level menu entries.
    • Transient Stability: When saving an REEC_A model (which is a PSLF model) out to a DYR file (for PSS/E dynamic data), Simulator translates the REEC_A model into an REECA1 model in the DYR file. This was an error in this translation where the Tpord and Imax values were being written out in the wrong order. These parameters appear in a different order in a DYR and DYD file, but the order written out to the DYR file was not flipped as necessary. This has been fixed.