Yes, 
PMIN = -9999
PMAX = 9999
QMIN = -9999
QMAX = 9999

These are the constrains that i put in the mpc.





Diego

Da: Ray Zimmerman
Inviato: giovedì 24 ottobre 2019 15:53
A: MATPOWER discussion forum
Oggetto: Re: Problems with OPF

Have you checked the generator limits, e.g. PMIN, PMAX, QMIN, QMAX?

You can use the checklimits() function in extras/misc to check OPF limits for 
you.

    Ray



On Oct 23, 2019, at 12:19 PM, Diego Piserà <[email protected]> wrote:

Dear Dr. Zimmerman
 
I have a problem with the runopf function.
 
I have a network with only one generator,
this models the primary substation.
 
%tap change
tap = 1.1;
% 
mpc.bus(1,8) = tap; % VM voltage magnitude
mpc.gen(1,6) = tap; % VG voltage generator setpoint
% 
mpc.bus(1,12) = tap; % VMAX 
mpc.bus(1,13) = tap; % VMIN
then I try to run both the runpf and runopf function:
 
runpf Converges and gives me a result.
>From these results I can observe that with the assignments made I have no 
>violation of the voltage limits (VMIN & VMAX) or of power passing in the 
>branches (RATEA) imposed in the OPF problem, so I would expect the runopf 
>function to converge.
 
Instead the OPF run function does not converge.
 
What could it be due to?
 
Diego


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