The Security Research Of Smart Distribution Grid’s Data Transmission

Smart distribution grid is the latest trend in development of distribution grid, due to itstechnological advancement,smart distribution grid distinguishes itself from the traditionaldistribution technology,and plays a decisive role in the smart powder grid.The importance of information and data is increasingly evident in smart distributiongrid,thus the security of datatransmission for smart distribution grid is one of the keyproblems to be solved.the main content is as follows:1. Analysis of smart distribution grid. combine with the composition and characteristicsof smart distribution grid’s data transmission system, thus provides a summary and ananalysis of smart distribution grid data transmission system model. potential associatedsecurity issues lead to the security needs of the smart distribution grid’s data transmissionsystem.2. Combine with the composition and characteristics of smart distribution grid’s datatransmission system, information encryption technology provides a solution path for the riskproblem of smart distribution grid’s data transmission. according to the characteristic of datatransmission system, design a data security transmission model which use hybridcryptosystem, key management and digital signature use the public key cryptosystem, but theencryption of message use symmetric cryptosystem. it can makes full use of the advantages ofthe two kinds of cryptostem, Compared with the single cryptosystem,it has great advantage inthe efficiency and security.3. According to the structure characteristics of smart distribution grid, designs anidentity authentication scheme, and analyzes the performance of the scheme, which the resultsshow that the identity authentication scheme achieves the design requirements.4. The data security transmission model and the identity authentication scheme whichare based on the cryptographic service, so design a cryptographic chip with dynamic partialreconfigurable technology, which use FPGA as hardware platform. The chip integrates ECCwhich belongs to public key cryptosystem, AES、PRESENT which belong to symmetriccryptographic system, and SHA-3which belongs to hash function. the application field ofAES and ECC is very extensive and have penetrated into every aspect of life. PRESENT isultra lightweight symmetric cryptographic algorithm, which is designed based on the limitedresources of IOT(the internet of things). it has many advantages which includes fastoperation speed、high safety performance and easy to the hardware implementation. SHA-3isthe latest standard of hash,its announced time is so late and Related research for it is still atthe start state, so it have the higher security. chip is vulnerable to outside attacks in the running process, which the most destructive and common is DFA(differential fault attack), Inorder to enhance the survival ability, the cipher chip add differential fault detection circuit-TRC detection circuit. Set up data security transmission model which use the paasword chipas the hardware platform,and emulate the functions of the model through the serial port.The studies is technically feasible and has obvious practical significance, and provides anew idea for smart distribution grid’s data transmission system with theinformation security.