The design of power grid data management system based on blockchain technology and construction of system security evaluation model

Abstract

The construction of smart grid has triggered comprehensive changes in power equipment. At the same time, massive data are waiting to be screened, analyzed and processed. However, there are many data sources and complex data structure in smart grid, and smart grid requires higher security, reliability, traceability, non-repudiation and real-time performance of data processing, which poses unprecedented challenges to the traditional data management. Blockchain technology has the advantages of decentralization, autonomy, leakage prevention and openness. It can match the demands of power data management in terms of operation mode, security protection, complement power data, and better meet the security and credibility requirements of energy Internet. Therefore, this paper designs the smart grid data management system based on blockchain, and constructs the system security evaluation model by using AHP and expert consultation method. Firstly, the characteristics of smart grid big data and blockchain technology are analyzed; Then the technical architecture of data management system is designed by using alliance chain, and the technical architecture is analyzed in detail; Finally, the index factors affecting system security are combed, and the system security evaluation model is constructed by AHP. Distributed storage, asymmetric encryption, consensus mechanism, and other technologies of blockchain technology can well solve the problems of power grid data storage and application, and better ensure the security of smart grid data.