Hello, The obj_func mainly minimizes the cost including the real and reactive power. But I have to only minimize objective function i.e. cost considering only the reactive power. I tried the way explained by you above but I am not able to do this.? Can you help? basically, my goal is to change the objective function. Thanks
On Wed, Jul 12, 2017 at 1:49 PM, Akash Tyagi <[email protected]> wrote: > ok, thanks > > On Wed, Jul 12, 2017 at 1:40 PM, Kardoš Juraj <[email protected]> wrote: > >> Try to have a look in the code in opf_costfcn.m and compare it with the >> objective function definition in the manual ( >> http://www.pserc.cornell.edu/matpower/manual.pdf) section 6.1 equation >> (6.6). You will find the function implemented in the code, as well as its >> gradient and Hessian w.r.t. vector x (equation 6.5). If you have problems >> with derivatives, have a look at section 6 in this document >> http://www.pserc.cornell.edu/matpower/TN2-OPF-Derivatives.pdf. It >> describes how the first and second derivatives can be computed. Good luck! >> ========================== >> Juraj Kardos >> Advanced Computing Laboratory >> Institute of Computational Science >> Universita della Svizzera italiana >> Via Giuseppe Buffi 13 >> Lugano 6904 >> Switzerland >> http://www.ics.inf.usi.ch >> =========================== >> >> On 12 Jul 2017, at 09:46, Akash Tyagi <[email protected]> wrote: >> >> Can you explain me through simple example.? >> >> On Wed, Jul 12, 2017 at 1:09 PM, Kardoš Juraj <[email protected]> >> wrote: >> >>> Hello, >>> >>> as far as I know, you can define arbitrary objective function by >>> modifying the following source file: opf_costfcn.m. Don’t forget that you >>> need to provide gradient and Hessian w.r.t. OPF control variables as well. >>> These derivations are used in optimizers to find the optimal solution. >>> >>> Best regards, >>> >>> ========================== >>> Juraj Kardos >>> Advanced Computing Laboratory >>> Institute of Computational Science >>> Universita della Svizzera italiana >>> Via Giuseppe Buffi 13 >>> Lugano 6904 >>> Switzerland >>> http://www.ics.inf.usi.ch >>> =========================== >>> >>> On 12 Jul 2017, at 08:02, Akash Tyagi <[email protected]> wrote: >>> >>> Hello everyone, >>> I am working on congestion management and running optimal power flow. >>> The Objective function after running the OPF is the cost, but I want to >>> include my own objective function. >>> Can you please let me know how to remove the existing objective function >>> and include my own objective function. >>> Thanks in advance >>> >>> >>> >> >> >
