DCOPF not converging for large system

2017-06-23 Thread Mort D. Webster
Dear Matpower Folks: I have larger network that is a solved load flow case from an ISO. The AC power flow converges fine, but neither AC nor DC OPF solve. I supplied my own estimated generator costs, and perturbed them so that none are identical. I get the following error: >> mpc =

Re: DCOPF not converge

2017-06-23 Thread prem panigrahi
Dear All I am facing convergence problem during the calculation of DCOPF in IEEE buses. For my work I have fixed the capacity of transmission line 110% of initial power flow by changing the RATE_A field, then at each time, I increase the load and generation with a factor (1+alpha).