The electricity trading system based on distributed coordination method in a micro-grid

In this paper, a fully distributed coordination control based on electricity trading system (ETS) is proposed. It aims at simulating price trading mechanism and the interaction process of the electricity price bargain among multiple users in a microgrid. Each user with an intelligent module is considered as an agent and each agent carries out its own price response and decision. The proposed approach adopts the ZigBee technology for communication. Each agent contains a ZigBee module based on the chip CC2530 and embedded C as the development language. The distributed coordination algorithm is proposed for the agents to obtain the optimal power generation or consumption and maintain the supply demand-balance within a microgrid. In the proposed ETS, only local data and information exchange with other adjacent nodes are required, so the computation and communication burdens are evenly allocated to multiple local agents. Hardware simulation results verify the effectiveness of the proposed distributed control strategy.