Distributed economic dispatching method for microgrid clusters considering information interaction

Abstract

With the development of renewable energy sources （RESs）， more distributed generators with random nature are connected to the distribution network in the form of microgrid clusters. Meanwhile， the traditional centralized economic dispatch also faces the challenge of complex information interaction. In addition， the flexible topology of microgrid clusters urgently requires a information interaction mechanism considering data privacy for microgrid clusters. To address the decentralized and autonomous characteristics of microgrid clusters， an optimal dispatch algorithm of complementary consumption and collaboration for RESs considering information interaction in microgrid clusters is proposed. The proposed algorithm takes reducing the cost of power regulation and guarantying the overall real-time power balance of the microgrids as the goal， and transforms the economic dispatch problem into the consensus based problem of incremental cost in the power distribution process. Case simulation results show that the proposed distributed algorithm has good convergence and obtains good optimal effect under the conditions of power constraints， topology changes and link failures.

Keywords

• microgrid clusters
• information interaction mechanism
• consensus algorithm
• economic dispatch