Thank you very much sir. I have one more doubt. I am using newton-fast decoupled method to run a power flow.
My work includes an extra column in Jacobian for (dp/dx) where x is for the frequency. Is it possible to add that column in Jacobain and run power flow to solve for dx as well? On Mon, Dec 9, 2013 at 2:38 PM, Ray Zimmerman <r...@cornell.edu> wrote: > MATPOWER does not have a built-in option to minimize the flow of a > specified line, but there are a few ways you could approach solving the > problem … > > (1) Brute force, run an optimal power flow in a loop where you decrease > the rating of the line in question at each iteration until the problem > becomes infeasible. If your changes are small enough, the last feasible > solution should be near the minimal flow in the line. > > (2) Use a DC OPF, and create a user-defined cost on the flow on the line > in question. > > (3) Split the line in half, with a dummy bus in the middle. Split this > dummy bus into 2 dummy buses (A and B) and put a generator at each to > represent the flow. Constrain generation at A to equal the negative of > generation at B, constrain voltages at A and B to be equal. Put a quadratic > cost on the generators at A and B to force them toward zero. > > The first option is probably the least amount of work if it is a one-time > simulation and the problem is small. > > -- > Ray Zimmerman > Senior Research Associate > B30 Warren Hall, Cornell University, Ithaca, NY 14853 > phone: (607) 255-9645 > > > > On Dec 9, 2013, at 1:18 PM, Nirav Shah <niravshah1...@gmail.com> wrote: > > Hi all, > I want to minimize the power flow from a particular branch when I change > the load and run power flow/ optimal power flow again. > > Is it possible? Please reply as early as possible. > > Thank you. > > > >
