Abstract
Islanded multi-microgrids formed by interconnections of microgrids will be conducive to the improvement of system economic efficiency and supply reliability. Due to the lack of support from a main grid, the requirement of real-time power balance of the islanded multi-microgrid is relatively high. In order to solve real-time dispatch problems in an island multi-microgrid system, a real-time cooperative power dispatch framework is proposed by using the multi-agent consensus algorithm. On this basis, a regulation cost model for the microgrid is developed. Then a consensus algorithm of power dispatch is designed by selecting the regulation cost of each microgrid as the consensus variable to make all microgrids share the power unbalance, thus reducing the total regulation cost. Simulation results show that the proposed consensus algorithm can effectively solve the real-time power dispatch problem for islanded multi-microgrids.
Highlights
The emergence of microgrids (MG) provides a new technical means for the comprehensive utilization of renewable energy [1,2,3]
This paper provides a multi-agent system-based consensus algorithm to solve the real-time power dispatch problem of islanded multi-microgrids, which have a lower communication burden and better dynamic performance
A real-time cooperative dispatch framework for islanded multi-microgrids based on multi-agent consensus method is built that can ensure the overall real-time power balance and minimize the power regulation costs
Summary
The emergence of microgrids (MG) provides a new technical means for the comprehensive utilization of renewable energy [1,2,3]. The multi-agent system based consensus method [22] provides a new way of solving the real-time power dispatch problem of islanded multi-microgrids. Compared with the traditional centralized optimization algorithm, the consensus method only requires each agent to obtain the information on the local and neighboring agents in real time. It can obtain the ideal convergence value with less transmission information and a shorter optimization time Motivated by these works, this paper provides a multi-agent system-based consensus algorithm to solve the real-time power dispatch problem of islanded multi-microgrids, which have a lower communication burden and better dynamic performance. A real-time cooperative dispatch framework for islanded multi-microgrids based on multi-agent consensus method is built that can ensure the overall real-time power balance and minimize the power regulation costs.
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