Research And Design Of Distributed Energy Trading Platform Based On Blockchain

Under the background of rapid economic growth,human demand for energy keeps increasing.Countries are facing many problems such as resource shortage,greenhouse effect,global warming and so on.It is irreversible to vigorously promote distributed renewable energy to join the energy trading market.Users can sell the excess electricity to make a profit,or they can buy relatively cheap electricity from other users to save electricity costs and reduce the load on the grid.At the same time,the promotion of distributed electric energy also brings new challenges to the operation and management of power system.On the one hand,due to the large difference between the distributed energy trading mode of many-to-many and the traditional mode of unified purchase and marketing,it is necessary to provide a new energy trading strategy to coordinate the reasonable allocation of resources between electricity producers and consumers.On the other hand,because all the energy producers and consumers have certain control authority over their own power generation and consumption equipment,and the energy transaction presents the characteristics of a small number of times.For the traditional centralized trading system,these characteristics will lead to the aggravation of resource consumption,the increase of operation cost,the low efficiency of trading settlement,and the difficulty in guaranteeing the fairness and transparency of trading.Therefore,it is necessary to provide a distributed communication and data exchange technology to cope with the potential crisis caused by the influx of information and energy flows.The technical characteristics of blockchain provide a feasible solution for distributed power transaction,which can provide reliable,interactive and low-cost transaction support for energy producers and consumers.First of all,all transactions on the blockchain are directly carried out by means of peer-to-peer transactions relying on P2 P network,which meets the conditions of smart contract,that is,automatic execution,and does not require any centralized organization to participate;Secondly,all nodes in the blockchain complete the trust endorsement together to provide the mandatory trust between users,which does not rely on the third-party audit institutions and reduces the trust cost;In addition,all nodes on the blockchain jointly maintain the chain information storage of time series growth.All transaction data can be traced and tampered with to ensure data security and reliability.In order to study the application of blockchain technology in the energy field,a distributed power trading platform based on Hyperledger Composer blockchain technology is designed.The research of this paper is carried out from the following aspects:Firstly,this paper constructs a distributed energy trading system.The process of user operation,blockchain deployment and energy dispatching is abstracted into three layers:user layer,transaction layer and physical layer.Such a hierarchical structure separates the user use,blockchain development and power control process from each other.The development and use of the three parts will not affect each other,which is convenient for development,update and transplantation.Secondly,this paper proposes a transaction strategy suitable for blockchain transaction scenarios.The strategy aims to realize the peer-to-peer transaction between the buyer and the seller.On the one hand,it gives the seller the right to make the power supply plan and sell electricity price freely,and gives full consideration to the subjective will of the electricity sellers.On the other hand,the buyer can choose the best solution to reduce the cost of electricity through self-interest iterative calculation,and compete for cheap energy resources through game.Through the simulation analysis,it is verified that the transaction strategy can quickly realize the minimization of the electricity cost of individual buyers and the whole system through a small amount of iterative calculation.Finally,based on Hyperledger Composer technology,this paper builds a blockchain energy trading platform.The design,development and arrangement are carried out from the aspects of transaction process,platform architecture and specific hierarchy.The effectiveness of the platform is verified by simulation transaction.Furthermore,the system delay,transactional throughput and fault tolerance of the platform are tested.Compared with Ethereum platform,it is proved that Hyperedge Composer technology has faster response speed and transaction throughput,and has good system fault tolerance.In addition,this technology abstracts transaction participants,assets,transaction logic and other contents into business network,simplifies the development process of blockchain,reduces the difficulty of blockchain development,and helps to expand the blockchain technology to various fields.