Research On Trusted Data Processing Between Microgrids Based On Blockchain

The purpose of microgrid is to realize the large-scale access of distributed generation and renewable energy,and to achieve high reliable replenishment of multiple energy forms.In order to achieve energy balance in the microgrid,local energy transactions between microgrids have developed into an efficient way to utilize the advantages of renewable energy for power generation.With the application of Internet of Things(IOT)technology in microgrid,data trustworthiness processing between microgrids becomes more and more important.At present,most of the research on Microgrid data security is focused on a specific level: security and trust between devices,trusted trading algorithms and platforms,or secure storage of microgrid data,ignoring the whole system data connection and interaction process.However,the traditional centralized power management trading platform lacks the flexibility of operation,and the expansion of the system is limited.Because of the heavy computing burden of the central node,the data processing time lags behind,thus affecting the credibility of the entire microgrid information data processing process.Firstly,according to the main operation and security objectives of microgrid data,aiming at the deficiencies of existing microgrid transaction architecture model,this paper proposes a novel hierarchical bidding model based on blockchain,which is based on bidding strategy and frontier blockchain technology.Based on data flow,the model is layered according to the main data security protection and processing process.In the main layer of the model,the authentication of information acquisition terminal and the encryption of information are realized by hardware,so that the confidentiality and integrity of data are guaranteed.Then,aiming at the problem that centralized data processing is not timely,the agent layer of the model completes the efficient and autonomous bidding process by coordinating the work of multi-agent,and achieves the availability of data.Finally,in order to overcome the shortcomings of centralized trading platform such as single point failure and low efficiency of clearing and settlement,this paper proposes to use Hyperledger Fabric blockchain technology with identity management in the application layer of the model to ensure the security of data in the transaction process.Because the proposed system model closely combines the important distributed characteristics of microgrid,it has higher robustness and data processing efficiency.Secondly,combined with the analysis of data availability in microgrid,aiming at the problem that incomplete information game between microgrids is difficult to achieve bidding strategy decision-making,this paper proposes an improved Bayesian bidding algorithm to guide microgrid vendors to achieve bidding strategy.The simulation results show that the proposed algorithm can provide reasonable bidding strategies under different power demands,and provide effective reference for the generation strategy of microgrid.Finally,in order to validate the model proposed in this paper,Fabric can be used in the application layer to achieve trusted data processing.Firstly,through a detailed description of Fabric deployment process and transaction links,this paper describes the whole process of Fabric for data protection.Then we use Hyperledger Composer tool to simulate the microgrid trading platform.Through some basic data operation experiments involved in the transaction process,the results show that Fabric can realize user authentication and authority,transaction between users and integrity of information records,and provide a reliable trading platform for user transactions.The proposed trusted transaction model between microgrids based on blockchain can provide a complete security guarantee for microgrid data,provide a good reference value for the security protection of transactions between microgrids,and provide a direction for exploring the application scenarios of block chain technology in microgrid.