On Apr 3, 2012, at 12:41 PM, Panagis Vovos wrote: > Dear Prof. Zimmerman, > > First of all I would like to congratulate you for your work and your > will to make it publicly available. I am trying to add non-linear > constraints in MATPOWER's OPF formulation. I have read the relevant > discussion in the email list, but I am planning to use the enhanced > OPF in large-scale deregulated power systems, so ideally I would like > to use one of the TSPOPF solvers. However, neither opf_consfcn.m nor > opf_hessfcn.m is called when any of the TSPOPF solvers is used. I can > use add_constraints in opf_setup.m, but did not find a way to define > them. Does TSPOPF define the non-linear constraints internally (in the > .mex file), so no new non-linear constraints can be added?
That is correct. > Is there a > way to define them, but still use one of the TSPOPF solvers? No. But the default MIPS solver is essentially the same algorithm as the PDIPM in TSPOPF, and it is only marginally slower. You could also use Ipopt if it is available (or fmincon). -- Ray Zimmerman Senior Research Associate 419A Warren Hall, Cornell University, Ithaca, NY 14853 phone: (607) 255-9645
