Software Patches

June 24, 2013

Features and Improvements

  • Transient Stability: Added more stability data validation for the CIM5, CIM6, and CIMW motor models which specify induction motor parameters using the equivalent circuit R and X values. During Validation, Simulator will now calculate the Tp0 and Tpp0 parameters and check them against the integration time-step. If the resulting time constants are too fast, then appropriate validation messages will appear. When auto-correcting values, the R1 or R2 parameters may be reduced to increase the time constants.
  • Transient Stability: When validating stability data, we will now also validate models which are presently out-of-service, but can be closed in during the simulation. An example of this would be the induction motor models which include Generator Machine Models MOTOR1, CIMTR1, CIMTR2, etc., and Load Characteristic models CIM5 and CIM6.
  • Bug Fixes

    • Case Information Displays: Corrected an error from previous patch on June 20, 2013 related to showing the switched shunt blocks and steps when in Difference Mode.
    • Transient Stability: On the Transient Stability Dialog, when choosing Save All Settings ToSave Auxiliary Simulator writes out an AUX file containing all the various input and option settings on the transient stability dialog. This feature was not properly including all the Result Storage, Store to RAM options for the following object types: VSC DC Line, Multi-Terminal DC Record, Multi-Terminal DC Converter, Area, Zone, Interface, and Injection Group. This has been corrected.