Thank you for your answer. Is there a way to limit both current and apparent power?
Thank you, Gamze ________________________________ > From: [email protected] > Subject: Re: Branch flow limits in OPF > Date: Wed, 25 Mar 2015 11:03:03 -0400 > To: [email protected] > > By default, the “flow” constraint in the AC OPF is on apparent power > (in the DC OPF, it’s active power), not on current, which probably > explains what you are seeing. See the 'opf.flow_lim' option to change > the default. > > Ray > > On Mar 25, 2015, at 4:55 AM, Gamze Dogan > <[email protected]<mailto:[email protected]>> wrote: > > Dear all, > > > I have a question regarding the power flow limits in the OPF. The flow > is limited by the branch value rateA. > > > I wanted to calculated the pourcentage of flow in my lines after the > OPF succeeded. I did it this way: > > > V(d,1) = results.bus(d, 8) * exp(1j * results.bus(d, 9)*pi/180); > > > [Ybus, Yf, Yt] = makeYbus(mpz); > > > Ifrom= Yf*V; > > > pourcentage_line(d) = ( abs(Ifrom) (d) * results.baseMVA) / > results.branch(d,6) *100; > > > First, could you tell me if this is correct? > > Secondly, I have trouble interpreting the results as at the end of my > OPF I get pourcentage of flows higher than 100%, for me as the flow has > been limited to the rate A value, I sould not get flows higher than > 100%. > > Thank you for any help on the subject, > > Regards, > > > Gamze > >
