The power flow does not enforce any limits (generator, voltage or branch flow limits). The only exception is that it will attempt to enforce generator reactive limits if the pf.enforce_q_lims option is true, which it does by relaxing the voltage setpoint at the generator when the reactive limit is reached.
If you want a solution that respects all limits, you will need to use the OPF. Ray > On Aug 28, 2018, at 4:03 AM, Mariusz Drabecki <[email protected]> wrote: > > Dear All, > > I ran Power Flow on slightly changed case Illinois 200 (PD of each node > augmented by 8%). The success flag is 1 and the PF fully converged. However, > when I look at the results I get situation shown below i.e. PG output is > higher than its upper constraint PMAX of the slack bus. I know that the slack > bus’ power injection results from the situation in the grid, yet shouldn’t it > still be within acceptable limits? If not then what would you suggest to > force the PMAX limit? > > > GEN_BUS PG QG QMAX QMIN VG MBASE > GEN_STATUS PMAX PMIN > 189 598,10 150,31 209,45 -46,67 1,07 > 682,98 1 569,15 > 170,75 > > Best, > Mariusz
