Design And Implementation Of Blockchain-Based Distributed Energy Trading System For Microgrid

With the rapid development of renewable energy industry and the rise of distributed generation technology,an increasing number of microgrids are applied to the power grid to provide regional electricity services,which can improve the quality of power supply.For the complex power supply system formed by multiple microgrids and the main grid,optimizing energy supply through energy transactions between microgrids and between microgrids and the main grid has become an important direction for the development of virtual power plants in new power systems.Traditional centralized power grid transactions have problems such as high maintenance costs,poor transaction efficiency,poor security and fairness,and cannot meet the development needs of future distributed energy trading markets.This article analyzes the current research status and existing market models of distributed energy trading in microgrids.Addressing the issues of low trading efficiency,lack of transparency in trading processes,and insecure transaction information in existing distributed energy trading systems,this paper designs and implements a prototype of a blockchainbased distributed energy trading system for microgrids.The specific tasks are as follows:1.According to the characteristics of microgrids,a distributed energy trading model covering intra-microgrid,inter-microgrid,and microgrid-tomain-grid transactions is designed.This model includes microgrid trading mechanisms based on aggregation agents and multi-microgrid trading mechanisms based on agent consortia.Aggregation agents use smart contracts to manage energy,select optimal power transmission paths,and facilitate the flow of energy and fund transfers between distributed generation parties and electricity users.Each microgrid selects a representative aggregation agent to form an agent consortium responsible for energy trading among multiple microgrids.2.For the specific transaction process of the energy trading model in the microgrid,we have designed a pricing strategy that considers the user’s risk attitude and a clearing strategy that considers transmission fees.The pricing strategy dynamically adjusts prices based on market conditions and user risk attitudes,helping distributed power generators and electricity users better adapt to the market and ensure the maximum benefit for both parties.The clearing strategy considers energy loss during transmission,promotes local consumption of energy within the microgrid,improves efficiency,and avoids waste.3.Based on the above research content,this paper designs and implements a prototype of a distributed energy trading system suitable for micro-grids,between micro-grids,and between micro-grids and large power grids based on blockchain technology,including the overall design of the system architecture and business processes,as well as for The detailed design of the blockchain support module and smart contract service module is based on the blockchain open source platform Fabric,using smart contracts and Java-related technologies to implement algorithm logic,develop system prototypes,and test and verify.