As shown in equation (6.21) it is the sum of the generation cost and the additional user defined objective function term that is being minimized. The equality constraint g(x) = 0 contains the nodal power balance constraints that handle the relationship between generation and loads. See (6.2) and the description of how it relates to (4.2) and (4.3) for the details.
Ray > On Mar 25, 2016, at 8:02 PM, Saiful Arefin <[email protected]> wrote: > > Thank you for your response Dr. Zimmerman. But what if the user defined > function and constraints are not related to any type of cost. I just need to > minimize that function. Will Matpower handle this multi objective function > situation and minimize both system cost and the function. > Also in which part of the code is the condition generation > load checked? > > Thank you, > Saiful > > From: [email protected] <mailto:[email protected]> > Subject: Re: OPF and LMP > Date: Fri, 25 Mar 2016 15:17:09 -0400 > To: [email protected] <mailto:[email protected]> > > Yes, the lambdas are the locational marginal prices. And the user-defined > costs and constraints are added to the standard OPF formulation (see Section > 6.3 in the User’s Manual > <http://www.pserc.cornell.edu/matpower/docs/MATPOWER-manual-5.1.pdf>), so it > is optimized together with the user costs added to the fuel costs. > > Ray > > > > > On Mar 25, 2016, at 11:07 AM, Saiful Arefin <[email protected] > <mailto:[email protected]>> wrote: > > Hello everyone, > > I am a bit confused about the lamda value that results from running an opf. > Are these results the locational marginal prices for the buses? > > Can you also tell me when a user added function is optimized. Is it optimized > alongside the fuel costs or are the processes two different optimizations? > > Thank you, > Saiful Ratul
