Mr Karthik. Let me take the 30 bus case as an example. Thus their are 6 gen and hence 6 cost functions.Thus when i take the partial differential i will get six equations. Thus the LMP values of the generator bus. I want the LMP values of all the 30 buses. How do we get that.
Thanks khirad On 2 March 2013 11:24, Kartik Pandya <[email protected]> wrote: > If your problem size is small then you should get same opf results with > ABC method and MINOS (MATPOWER) solver. but for large scale problem, > to get LMP with ABC, first run opf with ABC to get Pg of all generators. > then get first order partial derivatives of the quadratic cost functions of > all generators with respect to pg. then in the obtained equations > substitute Optimal values of pg to obtain LMPs. > --- > > ------------------------------ > *From:* Ray Zimmerman <[email protected]> > *To:* MATPOWER discussion forum <[email protected]> > *Sent:* Thursday, 28 February 2013 9:14 PM > *Subject:* Re: performing lmp calculation > > If your OPF solution matches MATPOWER's OPF solution, then you can simply > use the LMP values computed by MATPOWER's OPF, found in results.bus(:, > LAM_P). If your solution does not match, then I'm afraid it's up to you > to demonstrate that it is even a solution to the OPF problem, i.e. that the > optimality conditions are satisfied. Not sure how MATPOWER can help you > here. > > -- > Ray Zimmerman > Senior Research Associate > 419A Warren Hall, Cornell University, Ithaca, NY 14853 > phone: (607) 255-9645 > > > > > On Feb 28, 2013, at 4:00 AM, Khirad Dhabhar <[email protected]> wrote: > > Hi guys. I am doing my mtech project. Now i have been able to successfully > create an ABC(artificial bee colony) based algorithm to solve the optimal > power flow. Now i require the LMP (lambda values) for my solution. How can > i use mathpower to use my opf results to calculate the LMP values. > > Thank you > > khirad > > > -- > Friendship is like a red rose with a green stem > > > > > -- Friendship is like a red rose with a green stem
