Hello, I am working in optimization of distribution networks topology. I am trying to use matpower runopf function in case_ieee30 m-file with different topology configuration. When I try a radial solution composed with 24 branches, defined by:
x=[0 1 1 0 0 1 0 1 0 0 0 0 1 1 0 1 1 0 0 1 1 1 1 1 0 1 1 1 0 1 1 0 1 1 0 1 1 1 0 1 0]; acting on case file 'case_ieee30' colummn 11 of mpc.branch matrix [mpc.branch(:,11)]. I got convergence error and previously a warning: " Warning: Matrix is singular to working precision. > In mips at 423 In mipsopf_solver at 147 In opf_execute at 91 In opf at 225 In runopf at 96 In f_perdas at 82 " I cannot understand what is happennig I hope you can help me. Best Regards, Vitor Ribeiro.
