Software Patches

August 11, 2010

Features and Improvements

  • Auxiliary Files (SCRIPT and DATA Sections): Added a new script command "InjectionGroupsAutoInsert;". This passes no parameters. The options for this command can be set by populating the object "IG_AutoInsert_Options" appropriately. The settings available with this object represent what is seen on the Auto Insert Injection Groups Dialog.
  • Available Transfer Capability (ATC) Tool: Optimized the code for the calculate of ATC values to pre-calculate the Line Outage/Insertion sensitivities prior to running the ATC. This increased the speed of the single linear step ATC method by about a factor of 2. Increases the total speed of the iterated methods by about a factor of 3.
  • Case Information Displays: Add ability to define "Custom String Expressions" which represent the concatenation of strings from the columns of an object. Included in the was a new function available in the expression string with format "Str(x1, minlength, decimals)" where x1 represents a numeric variable, minlength represents the minimum number of characters for the result, and decimals represents the number of characters to the right of the decimal point.
  • File Formats: When reading from an EPC file, added the reading of the area and zone designation of a GE branch and transformer. This will not be stored in the PWB file format for now but will be added to Version 16's format.
  • Oneline Diagrams: When changing to a Saved View which specifies that a contour be shown, we now automatically refresh the contour image.
  • Transient Stability: When writing out DYD files, we now always write out the model names in lower case characters.
  • Transient Stability: When write out two bus equivalent models from the SMIB portion of the dialog, generators are now automatically set to AVR = NO.
  • Transient Stability: Modified to automatically refresh any open plots when performing the interval check while running transient stability. Previously it would only refresh plots if the option was set to "Transfer Results to Power Flow after Interval Check"
  • Transient Stability: Modified the user interface throughout Simulator to not allow editing of the power system data when you've transferred the transient stability state over to the power flow. Case Information displays will appear yellowed and editing on most power system model dialogs will not be allowed.
  • Transient Stability: Added ability to open only one end of a transmission branch.
  • Transient Stability: Fixed bug when using the default (done by specifying a negative gv1 value) non-linear steam gate function for the IEEEG1 governor.
  • User Interface Dialogs: On the Auto-Insert Injection Groups Dialog, add an option to name an injection group by a specific name. This will only be used if only ONE injection group ends up being created based on the other options. The intent is to use this in conjunction with the new scrip command "InjectionGroupsAutoInsert;".
  • Bug Fixes

    • Contingency Analysis: Fixed a potential error that could occur if PostCheck contingency actions were used in combination with the "Solve Power Flow" contingency action.
    • Contingency Analysis: When specifying a Post-Contingency AUX file which does not exist on your computer, Simulator is supposed to show a dialog telling you this and then abort the contingency simulation. This was not working properly and error was appearing saying "Cannot focus a disable or invisible window.". This error has been fixed.
    • File Formats: When writing out the DC converters for a multi-terminal line to an EPC file, Simulator write out modes of 0, 4, or 5 if the multi-terminal DC line had only 2 converters (similar to what is done for the Two-Terminal DC lines). This was reported as causing problem when reading into GE, so we now will write only 1, 2, or 3 instead.
    • Oneline Diagrams: When switching to a Saved View which specified that no contour should be shown, the contour was not properly removed. This has been fixed.
    • Transient Stability: Modified to better handle the saturation of the GENTPF and GENTPJ generator models
    • User Interface Dialogs: Removed old options to "automatically open overheated lines during simulation".