A distributed algorithm for the economic dispatch problems in power systems

A distributed algorithm is presented to solve the economic dispatch problem in power systems. By selecting the incremental cost of each generation unit and the incremental benefit of each elastic load as the consensus variable, the proposed algorithm is able to solve the conventional centralized economic dispatch problem in a distributed manner. The proposed algorithm is a first-order consensus protocol modified by a correction term which uses an estimation of the system power mismatch to ensure the generation-demand equality. The results of several simulations demonstrate the effectiveness of the proposed methodology.