Closed yanda1234 closed 1 year ago
Have you checked to make sure there are no branches with zero or near-zero reactance?
Which solver are you using?
I don't recognize the error message or the function that is throwing the error (glp_simplex
).
You are right. The problem is in the branch impedance. Some data are weird. Thanks, Dr. Zimmerman.
I built a power flow case based on a promod file data, but while running DCOPF onto it, I encountered error as below. What made me confused was I have already relaxed branches' constraints and the max capacity is enough to satisfy system load. What might be the reason for the problem? Kindly advise. Many thanks.
MATPOWER Version 7.0, 20-Jun-2019 -- DC Optimal Power Flow Error: basis matrix is singular to working precision (cond = 8.84e+18) glp_simplex: unable to recover undefined or non-optimal solution