See Also
Displays OPF specific information about the line and transformer records in the case. To show the display select Optimal Power Flow > Results > Branches 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 Line and Transformer records click on the Line/Transformers tab. This displays the Line/Transformer 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 display.
By default the display contains the following fields:
From Number, From Name, From Area Name
Number, Name, and Area Name of the From bus.
To Number, To Name, To Area Name
Number, Name, and Area Name of the To bus.
Circuit
Circuit identifier for the branch.
Monitor
Specifies whether or not the branch's MVA limit will be enforced in the OPF solution.
Max MVA
The maximum MVA flow on the branch. Value is determined based on the end of the branch with the higher MVA flow.
% of MVA Limit (Max)
The maximum MVA flow as a percentage of the branch MVA limit. Value is determined based on the end of the branch with the higher MVA flow.
Lim MVA
The MVA limit for the branch.
MVA Marg. Cost ($/MVAhr)
The marginal cost of changing the MVA flow on the branch (i.e., if the line rating were to increase by 1 MVA, what savings could be had).
Constraint
This field will be set to Binding if the branch limit is a binding constraint in the OPF solution, or Unenforceable if the branch limit is unenforceable with the available control set.