I suspect that PSSE is changing various controls (generator set points, transformer taps, etc.) in order to successfully solve the system. Since MATPOWER does not automatically move these controls, make sure that they are manually set (in the input data) to the values they take at the PSSE solution, then I suspect MATPOWER may give the same answer.
-- Ray Zimmerman Senior Research Associate B30 Warren Hall, Cornell University, Ithaca, NY 14853 phone: (607) 255-9645 On Dec 2, 2013, at 7:36 AM, 델카스틸로 <[email protected]> wrote: > Dear Professor Zimmerman: > > I have an inquiry with regards to power flow simulation (runpf). Im using > 1671 buses for my network data. I tried running power flow. Unfortunately, > after I made the command, most of the PV buses were converted to PQ buses > because Q limits were reached and consequently my reference bus was changed > to PQ bus. Thus, matlab showed the error: > > ??? Attempted to access pv(1); index out of bounds because > numel(pv)=0. > > Meanwhile, I tried running power flow thru PSSE using the same network data > and it converged. Please take note that I converted the network data raw file > to a matlab (*.m) input file in order to use matpower. > > I look forward for your immediate response with regards my concern. > > Very Respectfully Yours, > > Manuelito Del Castillo, Jr.
