On Jun 26, 2008, at 12:08 PM, [email protected] wrote:

Dear All,
    Hello!
Recently I am studying on Interior Point Method for Optimal Power Flow. I try to program by myself with Matlab to solve OPF problem with Interior Point Method (which mainly based on the paper of 'Introduction to interior- point methods' and 'Optimal power flow in rectangular form via an interior point method' by Geraldo Leite Torres& Victor Hugo Quintana). However, my program can not converge and can not get the optimal solution after lot of debugging. And then I tried to solve some simple mathematic problems with these interior point
methods, and the solution also can not be gotten.
Is there anybody in the group can give me some suggetions or discuss with
each other on these problems?

Have you verified, using finite-difference methods, that your code for computing all of your function derivatives is correct? If not, that's where I would start.

And the OPF in Matpower uses Interior Point
Method? Do you have any information or documents to recommand for Interior
Point Method?

There is an optional AC OPF solver for MATPOWER that includes two variations of a primal-dual interior point method. See ...

    http://www.pserc.cornell.edu/tspopf/

... for more details and a reference to this related paper (http://e3rg.pserc.cornell.edu/node/111 ).


--
Ray Zimmerman
Senior Research Associate
428-B Phillips Hall, Cornell University, Ithaca, NY 14853
phone: (607) 255-9645

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