Software Patches

May 11, 2016

Features and Improvements

  • File Formats: Added code to set the PowerWorld series capacitor flag based on the SERDEV field in the Areva files.
  • User Interface Dialogs: Added button to Options drop down in Case Information Toolbar for "Show Column Metrics as Hints"
  • Bug Fixes

    • Auxiliary Files (SCRIPT and DATA Sections): Fixed bug that would always set the Initial Value field to SPECIFIED if creating PartPoint objects from a auxiliary file.
    • Case Information Displays: Added a fix to case information cell selection when a selection is already made but you select a different cell without dragging. The selection could end up moving incorrectly.
    • Contingency Analysis: Set the bus topology at the beginning of the Create Expanded Breaker Contingencies process from either the GUI or script command to allow users to change breakers at will to determine breakers required for a new topology without having to solve a power flow that might not solve.
    • Difference Case Tool: Show a value for Bus Nominal Voltage when showing the Difference Flows difference case for buses that are new in the present case and didn't exist in the base case.
    • Fault Analysis: Fixed a bug when building the positive and negative sequence admittance matrices. If there were 2 or more parallel transformers in the model, the off-diagonal elements in the admittance matrices were not correctly combining all of the transformer admittances, but rather was only putting one of the transformer admittances in the off-diagonal and was ignoring the rest of the parallel transformers.
    • File Formats: Modified reading of Areva hdbexport CSV file so that it automatically fixes problems with a CSV file if a user has read the file into Microsoft Excel and then saved as a CSV from Excel. Excel breaks the file format by appending additional commas at the end of the header text lines. In addition, any TAB characters at the start of the heading text lines become enclosed in double quotes breaking the format. Simulator now automatically detects these errors in the header and ignores the extraneous text.
    • General: Fixed a bug where the third winding of a three winding transformer was being accessed without first checking the make sure the equivalent transformer representing it existed.
    • Transient Stability: Modified loading of DYD file so that when reading an exciter, governor, stabilizer or machine model for a generator it will automatically make the last model read the active model. Previous the first model read was the active model.
    • Transient Stability: Transient stability now updates the display only after 100 milliseconds to run faster on small cases.