Software Patches

January 9, 2017

Features and Improvements

  • Case Information Displays: Added new field to Island records to show the Number of Generators, Number of Loads, and Number of Switched Shunts in an island. This can be helpful in determining which islands are of any interest.
  • Contingency Analysis Tool: Added a new option in Contingency Analysis to "Prevent new island without enough controllable generation". This option is not chosen by default so it will not impact you unless it is changed. This option will modify the viability check of newly created islands during the contingency analysis solution to attempt to prevent the creation of an island that results in its new slack generator operating wildly outside of its Min/Max MW limits (as long as that new island has less than 50% of the total system load). To do this we estimate the load, losses and shunt MWs in the newly created island and make sure that the controllable generation in the island (AGC=YES) is such that Simulator has a chance of meeting the load, losses and shunt MWs without operating way outside of its limits. See the following link for more details:
    https://www.powerworld.com/WebHelp/#MainDocumentation_HTML/Power_Flow_Solution_IslandCreation.htm