Islanded DC OPF with DC lines

Dear all, I am implementing a DC OPF with DC lines (using PYPOWER python port). In the network some buses may be connected only through DC lines, and these I define as slack buses. I am finding these issues: 1 - For a 2-bus system where one is dc-connected, creation of the sparse Bf matrix fails (

Re: Islanded DC OPF with DC lines

I can’t really comment on the Python port, but can you check the same cases using the latest MATPOWER? Does MATPOWER give the same results? If you don’t have access to Matlab, you can always run MATPOWER in GNU Octave , a free-open source Matlab alternative.

Re: Islanded DC OPF with DC lines

Hi Dr. Zimmerman, thanks for the reply, I ran simple cases on matlab using v5.1, and got the same errors for situations 1 and 2. M-files are provided at the end, altered from test case t_case9_dcline. Thank you! 1 - For a 2-bus system dc-connected, creation of the sparse Bf matrix fails *.Could t