Research On Trusted Access Of Ubiquitous Power Internet Of Things Terminal Based On Blockchain

With the proposal of "three types and two networks" strategy,the pace of information and intelligent construction of power system is accelerating.However,the new energy revolution accelerates the use of a large number of terminal devices,which also makes the traditional centralized power Internet of things model face greater terminal security challenges.This paper combines the emerging blockchain technology with the terminal trusted access problem of energy Internet,and studies the distributed terminal access network model suitable for power system.The main work of this paper is as follows:(1)This paper analyzes the security problems in the field of power system terminal access,and selects the super ledger project as the research framework.Combined with the advantages of blockchain technology,such as high security and suitable for distributed system,the hyperledger fabric project under the alliance chain is selected to study the combination with power system,and the application prospect of blockchain technology in power system is explored.(2)The trusted access scheme of energy Internet terminal based on blockchain is designed.In this paper,combined with the reality of power terminal access,the terminal is divided into the management end and the controlled end according to t he performance and functional area,respectively given different permissions,which saves the cost of calculation and storage,and improves the efficiency of system processing.(3)In this paper,the access of the terminal is divided into two parts: termin al access and identity authentication.The pbft algorithm suitable for distributed system scenario is selected as the consensus algorithm,and it is implemented and improved to adapt to the environment and node characteristics of power Internet of things,which enhances the performance and security of the whole network.This paper tests the performance of the terminal access scheme by setting up an experimental environment based on fabric network.Compared with the traditional terminal access scheme of power system,it shows that the scheme has higher authentication efficiency and concurrency under a certain node size,which provides a feasible terminal access scheme for ubiquitous power IOT,It is helpful to maintain the terminal security of power system under the background of high concurrency.