For different control objectives of coordinated operation of multiple microgrids and active distribution network

a three-level coordinated control architecture(including the distribution network level

microgrid level

and component level)is developed based on multi-agent system. The process of scheduling management is divided into two parts

i. e. the optimization scheduling of the distribution network agent and the microgrid agent. A new scheme of interconnection and interaction between the active distribution network and multiple microgrids is proposed

and a two-level optimization controller based on distributed sparse communication network is designed for the component-level agents

which can achieve the rapid recovery of the voltage and frequency in case of load fluctuations in the microgrid and the exact distribution of active tie-line power. In addition

in order to analyze the influence of communication delay on the coordinated control between multi-microgrid agents

the communication topology is optimized according to the basic graph theory. Finally

an active distribution network with three microgrids is taken as an example on the PSCAD/EMTDC simulation platform

to verify the effectiveness of the proposed control strategy.