A Study of Multi-microgrid Trading Based on an Improved P2P Two-Way Auction Mechanism

With the deepening of energy market reform and the rapid development of distributed trading, electricity trading between multiple microgrids is not suitable for participation in centralized electricity markets, and Peer-to-Peer (P2P) trading has received widespread attention. In order to realize P2P electricity trading between microgrids, this paper firstly constructs a microgrid operation cost model, optimizes the pre-purchase and sale of electricity with each microgrid, and uses this as the independent variable to participate in the P2P trading between microgrids. Secondly, it establishes a computational model for pricing the network fee among multiple microgrids, proposes the first offer strategy of microgrid agents based on satisfaction and transaction willingness, and on this basis, studies the process of matching microgrid agents participating in two-way auction transactions, and iterates the clearing tariffs and power quantities based on the market dynamic equilibrium. The final arithmetic results show that the operating cost of each microgrid is reduced when electricity is traded between microgrids, which verifies the economy and effectiveness of the proposed trading model.