DefinePK

Abstract

Generally, Optimal Power Flow is a problem of power system having differentiable objective functions. However, in the present restructure electricity power in form competition the generator company will offer its energy price in form non-differentiable function. Determining the winner of bidding must be done through optimal power flow with the non-differentiable objective function. So energy price falls in minimum condition and the optimal results can be applied directly to the system. This paper proposes a simpler method and fast which is Multi Dimension of Coarse to Fine Search Method to solve the Optimal Power Flow with non-differentiable objective function. The Method has been tested on the Java-Bali power system, 25 buses with 8 generator buses, and the results are compared to the results for differentiable objective function. This method is simple, and relatively fast in term of processing time, and also always gives a convergent result, so it will be more suitable to solve the Optimal Power Flow problem on the large scale power system in the future.