Dear friends,
I am just thinking about which OPF algorithm is better if I solve this power losses minimization problem in MATPOWER. I don't want to install other solvers. I simply use the optimization toolbox provided by MATLAB. From the manual of optimization toolbox 4, the "fmincon" for minimization with nonlinear constraints seems the best way. But in MATPOWER manual, there are other options like PDIPM (pure Matlab) primal/dual interior point method, which I can't find in MATLAB optimization toolbox manual. What is the function name of PDIPM? And, I am confused about how to choose the proper algorithm in MATPOWER. Many thanks, Claire From: [email protected] Date: Thu, 24 Jun 2010 13:28:17 +0200 Subject: Re: Minimization active power losses To: [email protected] Thanks for the answer, simple and just what I need I had not thought about that option Álvaro On Thu, Jun 24, 2010 at 11:57 AM, RAVIKUMAR V <[email protected]> wrote: Hai Álvaro , This is the answer from Dr Ray Zimmerman for the same type of question in the previous post. 1. Can we use the 'runopf' for power loss minimization.If you give all of the generators equal linear costs, then the OPF will implicitly minimize losses (the only way to reduce costs is by reducing losses). Change the cost function as linear (see table B.4 generator cost data for format). bye. On Thu, Jun 24, 2010 at 2:30 AM, Álvaro Jaramillo Duque <[email protected]> wrote: Dear all, I am new in the list and also new user of MATPOWER . I will like to use MATPOWER to minimize the active power losses (part of my PhD work). I read the documentation, the chapter "Extending the OPF" explain how to add some cost functions, but there a similar way to replace the the objective function? I am familiar with interior point method and developing under matlab/octave. I read part of the MATPOWER code and I will like to code the objective function to minimize the active power losses. But I get lose in some parts, mainly where is created the Hessian matrix. There is something developed in this area? or can you get me some recommendation to code this objective function. And before to say good bye, I will like to say that is a really good news to see the change on the license to the GPL. I will try to make some contributions to the project or at least to promote the MATPOWER use. Best regards, Álvaro Jaramillo Duque -- ------------------------------------------------------------- WITH REGARDS, V.RAVIKUMAR PANDI, ------------------------------------------------------------- HAVE A NICE DAY ------------------------------------------------------------- _________________________________________________________________ SkyDrive电子画册，带你领略精彩照片，分享“美”时“美”刻! http://www.windowslive.cn/campaigns/e-magazine/ngmchina/?a=c
