Thank you! Jose Luis Calvo de Miguel PhD Student Imperial College London Department of Electrical and Electronic Engineering Control and Power Group Tel: +44 (0)7561540164 e-mail: [email protected] / [email protected]
From: [email protected] [mailto:[email protected]] On Behalf Of Ray Zimmerman Sent: 30 October 2012 20:22 To: MATPOWER discussion forum Subject: Re: optimal power flow with minimum generation There are two things you can do ... (1) Use runuopf, which uses a heuristic to shut down generators operating at PMIN if that would be less expensive overall. This respects still respects the PMIN limits, but is relatively slow, so it probably isn't applicable to large systems. (2) Set the PMIN limits to zero. This may be a reasonable approximation for DC OPF, but for AC OPF it unfortunately allows generators that have been "shut down" (i.e. dispatched at zero) to continue producing reactive power. -- Ray Zimmerman Senior Research Associate 419A Warren Hall, Cornell University, Ithaca, NY 14853 phone: (607) 255-9645 On Oct 30, 2012, at 2:59 PM, "Calvo, Jose" <[email protected]<mailto:[email protected]>> wrote: Dear Doctor Zimmerman, I am running optimal power flows on Matpower 4.1. I have noticed that the property "PMIN" forces generators to be dispatched. Then some of them are dispatched at their minimum power output even thought there is cheaper generation across the system (part loaded generators). Is there any way to disable this? Best regards, Jose
