A Research Of Community Microgrid Energy Trading Platform Based On Blockchain Technology

The energy trading within the community microgrid has the characteristics of high frequency and small amount,which poses great challenges to efficient decision-making,fast response and low-cost maintenance of the centralized power trading platform.Excessive concentration of information may lead to malicious competition by the center personnel for tampering with data or taking advantage of market information asymmetry.The rise of blockchain technology has provided a new solution for the community microgrid to create an efficient,transparent,and low-cost peer-to-peer energy trading platform.Firstly,this paper summarizes the current development status of blockchain,the research status of energy trading methods and trading platforms based on blockchain,and introduces the basic architecture and the classification of blockchain,with simple description of some key technologies utilized in blockchain.Subsequently,the community microgrid transaction model based on the blockchain was developed.The overall structure of the transaction and the transaction process were designed,the market mechanism of continuous double auctions was proposed,and the user's bidding strategy was designed based on the Widrow-Hoff learning rules.An example analysis shows that this trading model can maintain high market efficiency,while users can gain profit from participating in the market trading.To solve the problem of low transaction efficiency of the blockchain network,an improved PBFT consensus algorithm based on the credit scoring system is proposed.The analysis of examples shows that the improved algorithm can effectively reduce the transaction response delay.Finally,this paper analyzes the functional requirements of the trading platform,designs a three-tier architecture including client,server,and blockchain services,and implements the platform based on the Hyperledger Fabric consortium blockchain framework and Python Django.