That depends on the solver being used.
The default MIPS solver does not output intermediate results, but I suppose you
create a modified version of mips.m where you collect the variable x at each
iteration and add it to the hist struct that gets returned in
results.raw.output.hist.
Ray
On
The generator bus voltage for the power flow is set by the VG column of the gen
matrix. For the OPF it is an optimization variable must remain between the
bounds set by the VMIN and VMAX columns of the bus matrix.
You can also fix the voltages at the VG setpoint in the OPF by setting the
opf.us
