I assume this is an AC OPF solution. Unfortunately, I have never been able to take the time to discover the characteristics of the problems that lead to these sorts of numerical ill-conditioning warnings. It may have to do with the flatness of the optimization surface, but I'm not sure.
My only suggestion is that if you have access to any of the optional solvers you might try a different OPF_ALG option. -- Ray Zimmerman Senior Research Associate 419A Warren Hall, Cornell University, Ithaca, NY 14853 phone: (607) 255-9645 On Jan 9, 2012, at 12:37 PM, Boris Penaloza wrote: > Hi everybody, > I am trying to run an opf simulation using a case.m file with my own data. In > my case, I have 12 wind generators 750 kW each. However, when I run the opf > the next warnings appears --> Warning: Matrix is close to singular or badly > scaled.! > Does somebody know what it means? > I have also noticed that when I raised the injection power (in the range of > Megawatts) the simultaion converges. > What is the issue here?? > thanks in advance.. > Boris
