Research On User-side Transaction Model In Energy Internet Based On Consortium Blockchain

In the context of the new power reform policy,with the gradual liberalization of the electricity sales side market,users with distributed power sources can participate in electricity market-oriented transactions.Compared with traditional transactions,distributed energy transactions have the characteristics of decentralized location,quantified users,small transaction volume,and timely response.If centralized transactions are adopted,it will not only increase operating costs,but may also face The problem of information islands.Blockchain is a special distributed database technology,and its characteristics of trustworthiness,traceability,and non-tamperability are compatible with the energy distributed transaction scenario.However,blockchain-based distributed energy transactions often face problems such as low transaction efficiency and high cost.In order to solve the above problems,the main work done in this topic is as follows:(1)Checked the current domestic and foreign development status of energy blockchain,and summarized the previous solutions to the transaction model,the matching strategy of transaction objects and the consensus algorithm in the distributed energy transaction scenario based on the blockchain.(2)Design a trusted alliance distributed energy trading platform composed of multiple microgrids.As there are many types of participants and complex transaction behaviors in the microgrid,it is urgent to build a safe and efficient distributed energy transaction model.Drawing lessons from the traditional hierarchical structure of the blockchain,designing a five-tiered transaction structure,completing the transaction process in a combination of alliance chain + private chain,and designing an improved ant colony algorithm transaction matching strategy based on smart contracts to improve transactions matching speed of the object.(3)Design a hierarchical reputation mechanism based on reputation value.The consensus mechanism of the blockchain often has the problems of low performance and high time cost.In the distributed energy transaction scenario,users have higher requirements for rapid response.In order to solve this problem,the PBFT consensus mechanism commonly used in the alliance chain is improved,and the trust level is determined by evaluating the behavior of each alliance node,which reduces a certain amount of time and the cost of communication between nodes.To a certain extent,the efficiency of consensus among nodes is improved,and the time for transaction completion is shortened.Work in the above three areas,corresponding performance and safety analysis have been carried out to verify its effectiveness and reliability.