Research On Distributed Power Trading Based On Blockchain Technology

With the rapid development and widespread application of distributed generation technology,the proportion of distributed power in China’s distribution network is continuously increasing.At the same time,with the gradual opening of the power selling side,the boundaries between producers and consumers in power trading have also become blurred,and previously single function power purchasing users can be transformed into integrated power purchasing and selling users.However,the production and consumption structure of distributed power trading is characterized by decentralization.If we continue to use the traditional centralized trading model,there will be problems such as low efficiency,asymmetric information,low transparency in transactions,and vulnerability of trading centers.Therefore,it is urgent to study new trading models,trading mechanisms,and strategies to address these issues.Blockchain decentralization,openness,transparency,and tamperability effectively address various issues in distributed power trading.Based on this,in-depth research on distributed power trading is conducted,and the main research work is as follows:(1)Research on transaction mechanism and strategy of distributed power based on blockchain.Firstly,a distributed power transaction model is constructed,and a user credit evaluation mechanism is established based on the transaction model.By constructing credit indicators and comprehensively and dynamically evaluating the credit value of transaction users based on entropy weight method,credit risks in distributed power transactions are reduced.At the same time,a transaction matching mechanism for distributed power transactions is designed,which serves as a benchmark for clearing transactions and protects the interests of trustworthy users,And handle the electricity quantity deviation in the actual delivery of electricity.Next,establish a non cooperative game bidding model for electricity purchasing and selling users,and obtain the user’s optimal bidding strategy through iterative method to protect the interests of electricity purchasing and selling users.Finally,through security analysis and numerical example analysis,it is shown that the transaction mechanism and strategy based on blockchain are safe and feasible.(2)Research on smart contracts for distributed power trading based on blockchain.Firstly,a structured analysis of complex distributed power trading mechanisms and strategies is conducted to clarify the functional requirements of smart contracts based on transaction status and actions;Secondly,the corresponding contract function algorithm is designed,and the smart contract is deployed and tested on the Remix VM test network on the Remix IDE platform.The test results show that the distributed power transaction smart contract has the functional characteristics required by the transaction mechanism,and has good feasibility,effectiveness,and stability.(3)Research on distributed power trading system based on blockchain.Firstly,design the hierarchical architecture of the system,while clarifying the specific functions of each module within the system;Next,the detailed design of the system’s account management,power trading,transaction settlement,and information query function modules is carried out;Then,a distributed power trading system is built based on the Ethereum platform.Finally,the performance of the trading system is tested and analyzed,and the results show that the system can meet the transaction needs of users in distributed power trading scenarios.