Power system security and stability control terminal identity authentication method based on block chain

Abstract

The invention belongs to the technical field of intelligent power grid information security, and discloses a power system security and stability control terminal identity authentication method based on a block chain, and the method comprises the steps: voting new equipment A applying for network access by a node on the chain of an authentication block chain based on user identity information; enabling the new equipment A to send a communication authentication request to equipment B according to the identity of the equipment B, and send the last item of the own authentication key sequence to the equipment B at the same time; and after the authentication is passed, enabling the equipment B to send an authentication passing confirmation message to the new equipment A to allow continuous communication. Identity authentication between the safety and stability control terminals in the power system is achieved, the inherent distributed characteristics of the safety and stability control system are met, and the problem that an authentication center is fragile due to centralized management is avoided; time consumption and computing power requirements are reduced, and the operation characteristics of the safe and stable control terminal are better met. According to the invention, man-in-the-middle attacks can be defended, and the safe and stable control terminal is prevented from being illegally accessed.

Description

technical field [0001] The invention belongs to the technical field of smart grid information security, and in particular relates to a block chain-based identity authentication method for a security and stability control terminal of a power system. Background technique [0002] Currently, the closest prior art: [0003] As the second line of defense of the power system, the power grid security and stability control system undertakes the important responsibility of ensuring the safe and reliable operation of the power grid. The traditional vertical tree topology security and stability control system architecture is based on single-point to multi-point centralized control, and there is a lack of a complete identity authentication mechanism between security and stability control terminals. In scenarios such as extensive interconnection of terminals and distributed access to new energy sources, attackers can use attack devices or zombie hosts connected to the intranet to intera...

AI Technical Summary

Problems solved by technology

[0007] (1) Existing terminal identity authentication methods require a centralized management center to maintain the characteristic data of all terminals. When a large number of terminals participate in authentication and the authentication granularity is refined, the burden on the authentication center is heavy, and the demand for computing resources is increasing. Many, the terminal computing power is insufficient, and the frequency of single point failure is high. With the access of more and more distributed power plants, the demand for computing resources is increasing

[0008] (2) Most of the existing block chain-based identity authentication methods are improved digital certificate identity authentication mechanisms, which only replace traditional CAs with block chains in the original scheme, and still have certificate management, key management, and public key distribution. Problems such as delay, signature and signature verification delay cannot be solved, and cannot fully match the characteristics of the power security and stability control system

[0009] (3) The blockchain technology is still in the early stages of development. Most of the existing blockchain applications in the power system are only for power transactions and energy. There is no research on customized blockchain technology for stability control terminals, especially Combining specific applications can better solve the confidentiality, security, performance and other issues in terminal communication, meet the rapid development needs of the communication network of the safe and stable control system, and ensure the safe and stable operation of the power grid

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