Dr. Zimmerman, Do you have any idea about these questions? I've understand question 1: the answer should be: the default objective function of runopf for both AC OPF and DC OPF are the same polynomial defined by the gencost in the case struct.
Please correct it if it is wrong. Thanks, Lin 2013/6/18 linhomeperson <[email protected]> > ** > Dear all, > > I tried to run OPF with runopf function in MATPOWER. > 1, What is the default objective function ( e.g. "runopf(case30)" )? In > the manual, the objective function is fp and fq, however, what is the > detailed expression of function fp and fq. > 2, how can I replace fp and fq with my own user-defined function. > from the manual, I can define fu. , can I make f(x)=0? > > 3, the solution is . From my understanding, the problem is to minimize > the cost by setting proper Pg and Qg (In x, Pg and Qg are control variable > while theta and Vm are not). Is that correct? > > 4, Is there a best solver in MATPOWER, thanks? > > 5, What is the difference between DC and AC OPF? What is the physical > meaning of ignoring theta and Qg? In a real power system, why do we need AC > OPF? > > > Thanks, > > Lin >
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