Design And Implementation Of Industrial Control Teriminal Equipment Of Security Access System In Electric Power Industry

With the development of the fourth industrial revolution, the integration of industrialization and informatization is becoming more and more deeply, and the information technology has been widely used in the industrial control system. In order to realize the cooperation and sharing between the systems, the industrial control system gradually breaks down the previous closure, which makes the industrial control system faces the same traditional information security threats of viruses, Trojans and hackers, etc. In order to cope with the risk, at present, the majority of industrial control terminal equipment adopts external security device protection, but this scheme is easy to be tapped and tampered with the data. Because the most electric industrial control systems use the embedded real-time operating system, there will be a delay in instruction and so on in the process of the actual use of the outside-hanging scheme. Due to the industrial control system has high requirements for timeliness, so it needs to improve the security as well as to guarantee system real-time performance at the same time.In this paper, the main work includes:(1) On the basis of fully considering the system compatibility, expansibility and efficiency, the system architecture takes the client/server architecture as the design principle. It plans the framework design of the industrial terminal equipment security access system, and designs the related function logic modules, the database structure and the terminal equipment docking.(2) Based on the SSL protocol, it realizes the security reform of industrial control terminal equipment, to embed the security chip in the industrial control terminal equipment, reform the information verification and the encryption transmission of the industrial control terminal equipment, and it improves the security of the system.(3) It improves the security environment inspection of industrial control terminal equipment. To do the overall security protection on the system environment of the industrial terminal equipment through protocol check control, port access control, self security protection, security audit so as to ensure the safety of the industrial control terminal equipment.The industrial terminal equipment safety access system which designed and implemented in this paper has been put into use in one unit of electric power industry. This system is aimed at the security requirement of the distribution network dispatching automation system based on public communication network, and it proposes the security protection scheme of security access area, and solves the problem of distribution network dispatching automatic system, bidirectional identity authentication and message encryption and transmission. In the distribution network terminal, the security chip is the trusted root, which realizes the security integrity of access authentication, encryption transmission and system environment in order to ensure the identity of the distribution network terminal. It realizes the security and control of the main station of the distribution network dispatch automation, and the environment of a distribution network dispatch system is credible, so as to realize the system’s own immunity. To build system level secure and trusted environment, to prevent the occurrence of security incidents from the source. The system since its launch has been reliable and achieved the expected goals. Therefore, the system has a wide range of applications.