Thank you Sir for the response. I tried to add new variables as well as linear and nonlinear constraints. Modifications were made by increasing the matrix dimension and putting the additional equality and inequality as well as its derivatives (g, h, dg, dh, d2G, d2H). But, I did not get the convergence result as it showed an error. I will try the Matpower Natural Gas (MPNG) suggested by Wilson to solve this problem.
I supposed that this problem can be solved using the IPOPT solver since MPNG also faces the same convergency problem when running on MIPS or FMINCON. Thank you *Ahmad Bariq Al Fahri* Department of Electrical Engineering Sepuluh Nopember Institute of Technology On Mon, 13 Dec 2021 at 22:37, Ray Daniel Zimmerman <[email protected]> wrote: > In order to help, we’ll need more information. Such as, what is the form > of the additions you are making to the MATPOWER formulation? New variables? > Linear and/or nonlinear constraints? New costs? And how are you trying to > do the modifications? > > But first, let me strongly suggest using the latest MATPOWER (7.1) as > opposed to 5.0 which was released 7 years ago. Version 7.1 does include > user customization mechanisms for adding nonlinear constraints to the > problem. > > Ray > > On Dec 11, 2021, at 1:08 AM, Ahmad Bariq Al Fahri <[email protected]> > wrote: > > Dear respected developer, > > I am Ahmad, currently doing research on Optimal Power and Gas Flow (OPGF). > I tried to merge the electrical power system with the gas system to obtain > the optimal power and gas flow. But, I face some problems when I > concatenated the equality and inequality matrix (g, h, dg, dh, d2G, d2H). I > have already added the optimization variable and built the aforesaid matrix > as well as its derivatives. But, when I run the program it shows > "Numerically Failed" and "Did not converge in 10 iterations.". Could you > help me to explain what other steps that I need to do if I want to modify > Matpower? > > Thank you in advance. > > *Simulation conducted in Matpower 5.0 > *OPF calculation performed using MIPS > > > Regard > *Ahmad Bariq Al Fahri* > Department of Electrical Engineering > Sepuluh Nopember Institute of Technology > LinkedIn <https://www.linkedin.com/in/alfahri/> > > >
