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 <[email protected]> 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. > >
