Hierarchical Distributed Coordination for Economic Dispatch

The classical economic dispatch problem faces difficult challenges in a future smart grid with a great many distributed generators and fast power fluctuations due to high percentage of renewable energy. The traditional centralized scheme can not cope with a large number of generators, and the convergence rate of the purely distributed control decreases with the increase of the network size. A hierarchical distributed scheme based on a partition framework is proposed, in which the centralized local optimizations in regions and the distributed optimization among regions are coupled to solve the economic dispatch problem. Thus the number of agents in distributed part is greatly reduced by the partition. The simulation illustrate the effectiveness and good performance of the proposed protocol.

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