Dear Prof. Zimmerman, Could you please explain in detail how can I do both maximization of social welfare and minimization of loss with only maximization of social welfare? I understood that your mean is this.
I will be grateful if you explain that how can I do maximize social welfare and loss minimization with this in detail. Best Wishes Carlos On Wed, Dec 12, 2012 at 6:57 PM, Ray Zimmerman <[email protected]> wrote: > I'm not sure what is meant by minimizing losses subject to maximize social > welfare. Maximizing social welfare will usually implicitly minimize losses > since, all other things being equal, reducing losses increases welfare. > Once you have maximized welfare, any further decrease in losses will by > definition decrease the social welfare. > > My guess is that simply maximizing the social welfare is already doing > what you want. > > -- > Ray Zimmerman > Senior Research Associate > 419A Warren Hall, Cornell University, Ithaca, NY 14853 > phone: (607) 255-9645 > > > > > On Dec 12, 2012, at 12:25 PM, Carlos Gonzalez Almeida < > [email protected]> wrote: > > Thank you. > > For instance I want to Minimize total active power losses and Maximize > Social Welfare together in which : > > *Minimize Total Losses * > * > * > * Subject to * > * > * > * Maximize Social Welfare* > * > * > * Subject to * > * Network Constraints* > > > How can I do this in Matpower? I want to solve both of the objective > functions with one solver. > > Best Wishes > > Carlos > > > > On Wed, Dec 12, 2012 at 6:08 PM, Ray Zimmerman <[email protected]> wrote: > >> 1) MATPOWER solves the extended optimal power flow problem described in >> section 5.3 in the User's >> Manual<http://www.pserc.cornell.edu/matpower/manual.pdf> >> >> >> . Can you express the problem you want to solve in that form? (You >> haven't told me what your 2 objectives are) >> >> 2) I'm not sure that the term multi-period OPF has a widely agreed upon >> definition. Sequentially solving standard single period OPFs, using the >> output of one period to initialize and constrain the next period is one >> type of multi-period optimization, but I can't tell you if that is the >> problem you want to solve (or should want to solve). I can tell you that, >> using this approach, conditions in future periods will not be able to >> affect the solution for the current period, which may or may not be >> important for you application. >> >> -- >> Ray Zimmerman >> Senior Research Associate >> 419A Warren Hall, Cornell University, Ithaca, NY 14853 >> phone: (607) 255-9645 >> >> >> >> >> On Dec 12, 2012, at 11:54 AM, Carlos Gonzalez Almeida < >> [email protected]> wrote: >> >> Dear Dr. Zimmerman, >> >> 1)I have two objective functions and I want to maximize together, i.e. >> one of them should be the constraint of the other. How can I do this in >> MATPOWER? >> >> 2) For implementing a Multi-period OPF, can I put the output of function >> runmarket (f) in a for loop in order to implement multi-period OPF? Is it >> correct this way of implemeting? >> >> Best Wishes >> >> >> Carlos >> >> >> > >
