It is important to understand that in current versions of MATPOWER, both transformer tap ratios and shunt cap VAr injections are input parameters, not variables. You can, of course, solve a power flow or OPF problem, multiple times with different values of these parameters. For a single transformer, it might look something like this, for example …
define_constants; mpc = loadcase(‘mycasefile’); k = <branch index of transformer of interest>; for t = 0.9:0.0125:1.1 mpc.branch(k, TAP) = t; results = runopf(mpc); end Hope this helps, Ray > On Dec 25, 2014, at 5:27 AM, murugan R <[email protected]> wrote: > > Hello every one > > I requesting every one here to help me for matalab > coding to initialize the transformer tap setting and VAR injecting of shunt > capacitors with step size during the OPF .Here i am pasting the setence with > i want to convert into matab code. > > tap settings of the regulating transformers and VAR injections of the shunt > capacitors are considered as discrete variables. The transformer-tap > settings were assumed to vary in the range [0.9, 1.1] p.u., with step size of > 0.0125 p.u. The VAR injections of the shunt capacitorswere assumed to vary in > the range [0,0.05] p.u., with step size of 0.01 p.u. > > Thank you > > WITH REGARDS > > R.MURUGAN > > > > <http://sigads.rediff.com/RealMedia/ads/click_nx.ads/www.rediffmail.com/signatureline.htm@Middle?> > Get your own FREE website, FREE domain & FREE mobile app with Company email. > Know More > > <http://track.rediff.com/click?url=___http://businessemail.rediff.com/email-ids-for-companies-with-less-than-50-employees?sc_cid=sign-1-10-13___&cmp=host&lnk=sign-1-10-13&nsrv1=host>
