Software Patches

August 3, 2018

Features and Improvements

  • Difference Case Tool: In the Present Topological Differences from Basecase tool, when writing out an AUX file that represents the difference between two cases and using a user-specified Auxiliary File Export Format Description Simulator would always use the built-in "Network" format for NEW objects. This has been modified so that the user-specified AUX Export is used, but when writing out NEW objects Simulator will automatically APPEND any required fields that are missing from the AUX File Export Format Description.
  • General: Modified the caption of the "Single Solution" button to say "Solve Power Flow" instead.
  • Oneline Diagrams: A case information display of the new Markers object was not being updated correctly all the time. This could be done manually by clicking refresh on the grid of markers, but it will now be updated correctly whenever the Marker grid window is opened.
  • Oneline Diagrams: On a case information display of the new Marker objects, the feature "pan to object on open onelines" was not working. This has been fixed.
  • Oneline Diagrams: New marker objects are now added to a 'Marker' layer by default.
  • Transient Stability: Added support for a new Load Distributed Generation model DGDER_A. This is the same model as the machine model DER_A, however it is instead applied to the Distributed Generation portion of the load record.
  • Transient Stability: Modified Simulator to read and write CMPLDWG records from and to a DYD file. These are read into Simulator and the final 15 parameters for the DGPV model are striped off and handled separately. The first 4 of these parameters are used to populate the DistMW and DistMvar parameters of the load record in Simulator, but only if the existing load record has zeros for both those values. Then the final 11 parameters are used to create (or modify) a Load Distributed Generation model (DGPV) at the particular load record. When writing out a DYD file, if a CMPLDW model is being written to the DYD, Simulator will check to see if there is an active DGPV Load Distributed Generation model being used by the load. If there is, then the model will be written as a CMPLDWG instead and the appropriate final 15 parameters will be written.
  • Bug Fixes

    • Power Flow Solution: Fix a power flow solution error with the output of a slack generator whose terminal bus was also the terminal of a multi-terminal DC line converter. 2-terminal DC lines did not cause trouble, only the multi-terminal.
    • User Interface Dialogs: Added the ability to change the injected L uH and and injected C mF on the D-FACTS dialog. It was not allowed and the only way to set this amount was on the Model Explorer. This is only allowed when using the "Use fixed Xinj" mode of operation.
    • User Interface Dialogs: Fixed access violation encountered when trying to paste into a model expression lookup table.