Hi Claire See in the manual (that came in the MATPOWER package) section 5.5 Solvers
Any solver has properties and capabilities, read the section. By default is set the MIPS, that is a function into the MATPOWER package it doesn't depend of any toolbox like the "fmincon" in Matlab . I am using that because I work in octave, and work well, also in big systems, I made some test. Also I will like to try with Ipopt, that is a very well know solver, and is a package en some GNU/Linux distributions. If you don't have any problem executing by default, I think there is not a reason to set a different solver. Álvaro On Thu, Jun 24, 2010 at 1:54 PM, gsh <[email protected]> wrote: > 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 > ------------------------------------------------------------- > > > > ------------------------------ > 聊天+搜索+邮箱 想要轻松出游,手机MSN帮你搞定! 立刻下载！ <http://3g.msn.cn/> >
