As I mentioned before, OPF with a single source will NOT converge once any limits are encountered. I don't think the divergence issue is with non-comvexity of the cost function but it is rather due to inability to meet the operating limits. (in particular the voltage magnitude limits)
For future emails, please send any and all errors that you see in the command window and the commands that you used. Shri On Jun 30, 2014, at 9:40 AM, "Fereshteh Moghateli" <[email protected]<mailto:[email protected]>> wrote: system with pf is converge, but when i define cost function, it dosn't converge. how should i know this function is convex? On Mon, Jun 30, 2014 at 6:28 AM, Uriel Fernando Sandoval Pérez <[email protected]<mailto:[email protected]>> wrote: Is it convex your cost function? The system converges with "pf"? El lunes, 30 de junio de 2014, Fereshteh Moghateli <[email protected]<mailto:[email protected]>> escribió: excuse me, I have another question , I have to run opf from a 56 node distribution feeder that there isn't any generator or DG. then I define mpc.gen only for node1(ref node) and define a cost function with one row for this node. but I don’t know why opf dosn’t converge? Is the problem coefficients of quadratic equation? If yes, how much is range of this coefficient in distribution feeder? On Mon, Jun 30, 2014 at 5:51 AM, Fereshteh Moghateli <[email protected]> wrote: no matter, i can run opf with newton's method. On Mon, Jun 30, 2014 at 3:25 AM, Abhyankar, Shrirang G. <[email protected]> wrote: PF_MAX_IT_FD option sets the number of iterations for the 'fast decoupled' algorithm. Are you setting the PF_ALG option to select the fast decoupled AC power flow? Shri > On Jun 29, 2014, at 12:37 PM, "Fereshteh Moghateli" <[email protected]> > wrote: > > hi > how can increase number of iteration in matpower?when i use ''PF_MAX_IT_FD'' > , number of iterations don't change. -- Enviado desde un dispositivo móvil.
