Software Patches

June 4, 2013

Features and Improvements

  • Case Information Displays: Case Information object type is now available with Model Conditions and Custom Monitors.
  • GIC: On the unified GIC Transformer display, added the ability to High, Medium and Tertiary winding configurations and added ability to edit them from this display.
  • Oneline Diagrams: Added the ability for a Generic Model Field to show the "Case Information" object to show summary information about the entire case.
  • PV and QV Curve (PVQV) Tool: Added a new feature on the PV curve to specify an interface on which you desire to increase the MW flow. You then configure the OPF settings in Simulator appropriately and the PV Curve will move optimally move OPF controls (generator, loads, dc lines, etc.) to ramp up the loading on your interface
  • PV and QV Curve (PVQV) Tool: Added a new feature on the PV curve to specify 2 interfaces on which you desire to increase the MW flow and an angle (Angle of zero means increase only the first interface, Angle of 45 degrees means increase each interface equally, Angle of 90 degrees means increase only the second interface). Again the OPF controls must be configured appropriately.
  • PV and QV Curve (PVQV) Tool: Added a new feature on the PV curve to specify a third interface on which you additionally desire to maintain a constant MW flow.
  • PV and QV Curve (PVQV) Tool: Added a new feature on the PV curve to treat a negative dV/dQ value at a bus for which this quantity is tracked as a critical scenario (treated the same as a failed power flow solution)
  • Transient Stability: Modified the Transient Stability Generator and Load Summary case information displays so that the Paste option is available.
  • Transient Stability: Cleaned up the Unified GIC Transformer table features. Also added 3 separate fields to set the winding configuration on High, Medium and Tertiary winding.
  • Bug Fixes

    • Contingency Analysis: In the rare situation that a set of contingency actions cause a bus to become disconnected and then reconnected in the same contingency simulation, the reported values for Islanded Generation, Islanded Load, and Disconnected Buses could be incorrect. This has been fixed.
    • Fault Analysis: Fixed an error in fault analysis when load records existed which with a status of CLOSED, but a bus which was disconnected with a zero voltage.
    • Oneline Diagrams: When choosing to Autosave PWB files every so many minutes, and also setting it to "prompt" about whether to save the PWD files presently open, Simulator would prompt about the PWD files constantly. It will now simply not save the PWD files in this instance.
    • Power Flow Solution: Modified warning message in log when dispatching an island using an injection group when the injection group spans multiple islands. Simulator will not allow this type of control, but the warning message in the log was not properly communicating this.
    • Power Flow Solution: Cleaned up solution for Switched Shunt control for SVC Type 2 (svsmo2). This type of shunt control is now handled only in the voltage control loop similar to other traditional switched shunts instead of in the inner power flow loop as is done for svsmo1 and svsmo3.
    • Transient Stability: Fixed error in estimating the transformer configuration for Unknown configurations when the (From Bus NomkV < 100 kV) and (To Bus NomkV > 100 kV). These should be assigned as Delta - Grounded Wye, but were erroneously being set to GWye-Gwye.