Re: DCOPF not converging for large system

2017-08-10 Thread Ray Zimmerman
- > min capacity- > on - > off - > > Reference Buses > num of ref buses 1 > ref bus numbers3292 > > > From: bounce-121637002-78651...@li

Re: DCOPF not converging for large system

2017-08-08 Thread prem panigrahi
___ From: bounce-121637002-78651...@list.cornell.edu <bounce-121637002-78651...@list.cornell.edu> on behalf of Ray Zimmerman <r...@cornell.edu> Sent: Monday, July 3, 2017 9:33:26 PM To: MATPOWER discussion forum Subject: Re: DCOPF not converging for large system If you have a

Re: DCOPF not converging for large system

2017-07-03 Thread Ray Zimmerman
If you have a solved AC power flow, that’s a good start. Normally, the first step I try when faced with an OPF that won’t converge is to eliminate the branch flow limits by setting the RATE_A column of the branch matrix to zero (or by increasing the values by some factor). In your case, you can

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 =