Research On The Collaborative Model Of Microgrid Based On Blockchain

Microgrid refers to a small power generation and distribution system composed of distributed power sources,energy storage devices,energy conversion devices,related loads,and monitoring and protection devices.It is an autonomous system capable of self-control,protection,and management.However,each participant in the microgrid belongs to different energy subjects,and each energy subject does not trust each other,and the speed of reaching consensus is slow.There is also the possibility that malicious energy subjects forge or tamper with transaction data.The advent of blockchain can solve these problems.Blockchain technology consists of smart contracts,encryption algorithms,and block storage.Blockchain is considered to be a revolutionary technology.Participants have an equal status.There is no single entity in the blockchain that can independently control the information in the system.In addition,the information in the blockchain is open and transparent,and can be consulted by all participants in the system,which helps to achieve the requirements of openness and fairness of microgrid transaction information.Based on the above research content,this article first explores the feasibility and necessity of the combination of blockchain technology and microgrid.Because microgrid technology and blockchain technology are decentralized,all participating entities maintain the network collectively,and frequent inter-subjects Transaction,must guarantee the security of information transmission and other characteristics.Applying blockchain technology to the microgrid can reduce the trust cost of the microgrid,improve the operation efficiency of the microgrid,and reduce the energy loss of the microgrid.Based on the actual situation of microgrid operation,this paper proposes an improved PBFT microgrid distributed energy subject consensus algorithm.This algorithm reduces the frequency of information interaction between distributed energy subjects and effectively improves the efficiency of subject consensus in microgrids.Compared with the classic PBFT consensus algorithm,it has been greatly improved in the simulation data test.Based on this algorithm,a microgrid scheduling model based on blockchain is programmed in this paper.This model uses an improved PBFT algorithm as a consensus mechanism,and uses smart contracts as an interface for energy transactions and information interactions among energy entities in the microgrid.This model can upload photovoltaic,wind power information,transaction processes between energy subjects and carbon rights transaction records to the blockchain in the microgrid.This article first introduced the related technologies of blockchain and microgrid in detail,including distributed storage,asymmetric encryption,smart contracts,and so on.Then based on the advantages of blockchain technology and the shortcomings of the current microgrid,a blockchain-based microgrid scheduling model is proposed.Compared with the traditional model,this model has higher data transmission efficiency and lower consensus reaching time.In this paper,a detailed feasibility experiment and performance test for the consensus algorithm between micro-grid energy sources in the model to improve the PBFT is performed.The experimental results show that the algorithm performs better than the traditional PBFT consensus algorithm.This paper designs and implements the scheduling model in the Ethereum environment,and tests the model’s fault tolerance and performance data in different situations.