Software Patches

December 10, 2010

Features and Improvements

  • Auxiliary Files (SCRIPT and DATA Sections): Modified the Move() script command to permit you to move a MULTISECTIONLINE. The format is the same as for moving a regular branch except that the object name should be MULTISECTIONLINE.
  • Oneline Diagrams: When opening a oneline diagram using the AXD format, if no Saved View named THIS_VIEW_IS_APPLIED_TO_THE_CURRENT_DISPLAY is specified, then a Show Full will automatically occur for the oneline.
  • Power Flow Solution: Modified the algorithm which automatically chooses a slack bus when a new island is created. Previously, if possible, it would always choose a bus which had generation that regulated its own terminal bus. Now it is biased to do this, but if another bus with generation that does not regulate its terminal bus is available and this other bus has a maximum MW output that is 5 times higher, it will be chosen.
  • Transient Stability: When modeling a GENCLS model with H=0 and D=0 it is now treated as an infinite bus.
  • Transient Stability: Modified two bus equivalent saved from the SMIB portion of the dialog, we now save a GENCLS model on the slack bus saved to represent an infinite bus.
  • Transient Stability: Added the ability to read a "DYR file with options". When choosing this, you may specify a MCRE *.rwm file to split up generators, a MTRLD *.dat file to split up motors, a GNET *.idv file to disable generator models, and a BASEGEN *.dat to specify the Governor Response Limits flag for generators.
  • Transient Stability: When writing out a DYR file, we now automatically write out a GNET *.idv and a BASEGEN *.dat file. The filename and patch used will be the same as for the DYR file, except "_GNET" and "_BASEGEN" are appended to the filenames.
  • Bug Fixes

    • Auxiliary Files (SCRIPT and DATA Sections): Fixed an error in parsing the parameters of the OpenCase() script command choosing to open a PTI or GE file with options. The options specified would be ignored if there was a space between the comma and the bracket "[" which started the specification of the options.
    • Case Information Displays: In versions of Simulator without the PVQV add-on, the ability to Toggle the Injection Group filed Scale? was not working. This has been fixed.
    • Contingency Analysis: Fixed error on What Actually Occurred? descriptions when using a SetTo or ChangeBy action for a Generator, Phase Shifter, or DC Line setpoint. The Contingency was always processed correctly, but the What Actually Occurred? string was incorrect.
    • Distributed Computation: Fix for distributed computation if machines finished initializing *after* computation had already completed, an access violation would occur.
    • File Formats: When appending an EPC file, fixed a problem with creating a multi-section line where the existing line was not a multi-section line.
    • Oneline Diagrams: Fixed error on the Find Oneline Objects dialog when tyring to define a filter for the list of objects.
    • User Interface Dialogs: When creating an equivalent, if any terminal of a three-winding transformer was chosen to be in the External System, then all the terminal buses and the star bus would be flagged as in the external system. This has been modified so that only the star bus is automatically flagged as in the external system.
    • User Interface Dialogs: Modified the processing of what is considered a radial branch when choose to Remove Radial Systems on the Equivalencing Dialog. Previously the entire three-winding transformer would be equivalenced even if only the tertiary winding ended up begin connected radially.
    • User Interface Dialogs: On the Calculated Field Dialog an access violation occurred when choose to set the condition the Same as a Filter. This has been fixed.