Bug Fixes
- Optimal Power Flow (OPF): When moving Load MW values in the OPF or SCOPF solution and choosing the option to maintain a constant power factor, we have modified it so that the MW can not be decreased to a value lower than half the MVA convergence tolerance. This is done so that the load will not be set to 0.0000 MW and 0.0000 Mvar because this causes the solution to lose information about the Q/P ratio.
- Power Flow Solution: When changing the monitor direction of an Interface needed to update structures related to calculating contingent interface flows. We now ensure this is done.
- Security Constrained OPF (SCOPF) Tool: When moving Load MW values in the OPF or SCOPF solution and choosing the option to maintain a constant power factor, we have modified it so that the MW can not be decreased to a value lower than half the MVA convergence tolerance. This is done so that the load will not be set to 0.0000 MW and 0.0000 Mvar because this causes the solution to lose information about the Q/P ratio.
- Sensitivity Calculations: When using the Monitor Direction = "TO -> FROM" for an Interface, in situations where the outage elements within the Interface definition resulted in isolated buses, the Shift Factor calculation for an interface could show incorrect values at the isolated buses. This has been fixed.
- Transient Stability: Fixed a bug with the "Re-evaluate to get Limit Monitor Violations". When monitoring Buses, if the bus was disconnected during the simulation it was reporting violations for those buses. When you run transient stability, buses that are disconnected are not monitor for limit violation purposes. Now this was fixed for the Re-evaluate after you already have results in RAM or in Hard Drive. However, for Bus objects violations, if using results in RAM, make sure to also have Bus Status results in RAM because if not, violations will ALSO be shown for disconnected buses. For Hard Drive Bus objects violations, nothing else needs to be done and the violations will be only reported for connected buses.
- User Interface Dialogs: When opening the Load Dialog box, if the load did not presently have any Benefit Curve points, the table on the OPF Load Dispatch tab of the dialog would be populated with entries of 0 MW and a 10000 $/MWh benefit. Click OK would then add this 0, 10000 marginal benefit curve point to the case. This was confusing and has been removed so that the table populates to empty instead which is the same as the generator dialog bid curve points.