Revision history [back]

There is nothing strange here. There are no P limits at a swing bus. The swing bus will supply the power necessary to maintain the active power balance in the system, i.e. the total generation = total consumtion + losses.

You have to increase PGEN for some type 2 generator nodes with at least 200 MW and solve again. Or decrease the load with 200 MW.

See also post "Swing Bus Negative Active Power".