See Also
This list displays OPF specific information about the nomogram records in the case. To show the list, select Optimal Power Flow > Results > Nomograms in the Model Explorer. This display is actually a page of a display showing all the potential inequality constraints in the power system. The top portion of the display repeats the fields shown on the Constraint Options page of the OPF Options and Results dialog.
To view the nomogram records click on the Nomogram Interfaces tab. This displays the nomogram interfaces page which is a class of Case Information Display and therefore can be used in a manner consistent with the other case information displays. Specific formatting options are available from the local menu, which can be accessed by right-clicking on any field in the page.
By default the Interface Records page contains the following fields:
Nomo. Name
Name of the nomogram.
Nomo. Seg.
The segment of the nomogram. Each segment of the nomogram is treated as a separate constraint in the OPF, and therefore is listed individually in the OPF nomogram table.
Monitor
This field will be set to YES if the nomogram segment is monitored during the OPF.
Interface MW Flow
The total MW flow for the segment of the nomogram.
MW Limit
The segment MW limit.
Percent
The amount of MW flow on the segment as a percentage of the segment’s limit.
Monitor Direction
The direction on the segment in which the flow is being monitored.
Monitor Both Directions
Yes or No field indicating if both directions should be monitored at the same time.
MW Marg. Cost $ / MWh
The marginal cost of enforcing the limit on the segment.
Constraint
This field will be set to Binding if the nomogram limit is a binding constraint in the OPF solution, or Unenforceable if the nomogram limit is unenforceable with the available control set.