Research On Advanced Measurement Infrastructure Data Security And Privacy Protection In Smart Grid

With the in-depth application of advanced measurement infrastructure in smart grids,the communication between utility service units in smart grids and power consumers on the demand side has become more frequent,and the application of emerging technologies in smart grids has more and more nodes.Joining the power network,there is good and in-depth interaction between nodes,and a large amount of data is also generated.The sensitive data and private information of the grid contained in these data may be illegally viewed or tampered with,causing losses to power companies and users and causing serious consequences.Two aspects of the secure transmission of electricity user data in the advanced measurement infrastructure and the protection of user privacy in the network are studied in this paper.The specific work is as follows:First,starting from the security of data transmission,a data signature-based scheme is proposed.The scheme is to sign and then use Paillier encryption for secure transmission.After the signature is successfully verified,the user’s electricity consumption data can be safely transmitted.To the opponent’s attack and insider attack.In this solution,we first sign by digital signature technology,and then construct a transmission tree structure for data transmission.The data is transmitted through the transmission tree structure.During this period,the homomorphic encryption algorithm is used for encryption,and the control center obtains the ciphertext.After that,the signature is verified first,and then the ciphertext is restored to plaintext data.It is proved to be safe through formalization,At the same time,the integrity of data transmission is verified through the hash function,and the consistency of data transmission is verified on different node buses.the scheme has superiority compared with other schemes of the same type in terms of performance.Second,starting from the privacy protection of users’ personal information,a pseudonymous privacy protection scheme based on third-party certification agencies is proposed.The anonymity of smart meters is guaranteed through the form of pseudonymous and pseudonymous certificates issued by trusted certification agencies and local certification agencies.Use masked technology for data aggregation and use AES algorithm to encrypt data.This method is suitable for resource-constrained terminals.Through formal proof and security analysis,the solution can protect the user’s identity privacy.The experimental results show that a relatively good privacy protection effect is achieved.And reduce the calculation and communication overhead.