Two-level decomposable penalty-based distributed economic dispatch for microgrid operation

With the rapid growth of renewable energy resources, the structure of microgrids is becoming more and more complex, rendering the traditional centralized method more computationally intensive and poorly scalable. In order to realize the economic optimization operation of microgrids in a distributed way, this paper proposes a two-level decomposable penalty method based economic dispatch algorithm (DPED). The first level transforms the complex constraints into penalty terms of the objective function and simplifies the optimization problem with simple constraints. The second level adopts the forward-backward splitting method to decompose the complex objective function into multiple simple subproblems, which is convenient for the computer to solve in parallel. Finally, simulation results show the effectiveness of the proposed algorithm.