Hi Baljinnyam,
I also have code implemented for rectangular coordinates. Let me know if you need some input or for comparison, e.g. computation of Jacobian/Hessian for different flow limits (P, I, S) Nico Von: bounce-122227521-78782...@list.cornell.edu [mailto:bounce-122227521-78782...@list.cornell.edu] Im Auftrag von wandlf Gesendet: Freitag, 26. Januar 2018 08:48 An: MATPOWER Developer List <matpower-de...@list.cornell.edu> Betreff: Re:Re: 3 other variations of the OPF formulation to Matpower Hi Baljinnyam, violently thanks for your working as to Matpower. I suppose it will be great for adding this functions that you have developed. Further discussion about this kinds of questions will be greatly useful. sinoy At 2018-01-25 22:47:21, "Ray Zimmerman" <r...@cornell.edu <mailto:r...@cornell.edu> > wrote: Hi Baljinnyam, Thanks for your offer to contribute. This would be a nice addition to MATPOWER. I suggest starting by adding two new MATPOWER options, each with default values of 0 opf.current_balance = 0 (complex power balance) or 1 (complex current balance) opf.v_cartesian = 0 (polar) or 1 (Cartesian) Then find all the places in the existing OPF code where the current (default) formulation is assumed and add conditionals to implement the other variations. You might find it useful to use the MATLAB Profiler with a simple runopf() call to map out the functions that are called. I think much of the work will be in opf_setup(), where well need to use different variables and constraints. Another thing to do early in the process is to duplicate the t/t_opf_mips.m file for each of the 3 new variations. The initial goal will be to get all of those tests to pass for each of the versions. Of course, you will want to begin all of this on your own fresh fork of the current MATPOWER development branch using the guidelines in the Contributor <https://github.com/MATPOWER/matpower/blob/master/CONTRIBUTING.md#submitting -additions-or-modifications-to-the-code> s Guide. Dont hesitate to ask if you have questions or need any help along the way. Thanks again, Ray On Jan 24, 2018, at 4:40 AM, Baljinnyam Sereeter <b.seree...@tudelft.nl <mailto:b.seree...@tudelft.nl> > wrote: Dear Matpower developers, I use Matpower for my work to solve OPF problems. As we know that the power balance (mismatch) equations in Polar coordinates are used as equality constraints in the OPF formulation in Matpower. However, depending on the formulation of equality constraints (power or current mismatch) and specification of the coordinates (Polar or Cartesian), OPF problem can be formulated mathematically in four different ways for a single physical formulation. I am working on other three versions since some advantages can be obtained for the derivatives or properties of matrix equations of Newton update step. I have finished other versions theoretically and implemented on Matlab. So I was wondering if you would like to include the other versions in Matpower. If you are interested, I would like to discuss how we can design the implementation. Thanks in advance. Regards, Baljinnyam S
smime.p7s
Description: S/MIME cryptographic signature
