Consensus-Based Distributed Power Economic Dispatch Algorithm Considering Communication Delays under Switching Topologies

A consensus-based distributed algorithm is proposed for the economic dispatch of power system considering communication delays and switching topologies. The relationship between the equilibrium point and the optimal solution of the algorithm is analyzed. According to the Lyapunov stability theory and the Cauchy convergence criterion, and the topology is required to be jointly connected, sufficient conditions for the convergence of the algorithm are obtained. Moreover, the nonlinear algorithm overcomes the shortcomings of traditional consensus algorithm that cannot deal with generator output constraints before convergence by setting the saturation zone. Finally, some simulation results show that our algorithm is effective.