Method for network security protection based on power generation state of water-turbine generator set

Abstract

The invention discloses a method for network security protection based on the power generation state of a water turbine generator set, which comprises the following steps: collecting industrial control network traffic of water turbine sets in different power generation states to form water turbine behavior traffic in different power generation states; cleaning and purifying the behavior flow of the water turbine in different power generation states, and establishing a behavior portrait model of the water turbine; based on the water turbine behavior portrait model, collecting and analyzing the real-time flow of the industrial control network, discovering the difference with the water turbine behavior portrait model, and positioning difference points; and performing comprehensive research and judgment on the difference point equipment, identifying a network attack behavior according to a research and judgment result, if the network attack behavior is a network attack, starting a safety protection measure, and otherwise, adjusting the water turbine behavior portrait model according to research and judgment data. According to the invention, an active security protection method can be provided for the power industrial control network, and the problem that passive protection based on malicious codes, attack behavior feature libraries and the like in an existing method is not suitable for the actual power industrial control environment is solved.

Description

technical field [0001] The invention belongs to the technical field of industrial control network security, and in particular relates to a method for network security protection based on the power generation state of a hydroelectric generating set. Background technique [0002] Hydrogenerator sets are the basic key equipment for the production and operation of hydropower plants. The industrial control network it is in is an important key infrastructure defined by the national network security. The safe and stable operation of the network plays an important role in the security of the power system. However, due to the great difference between the industrial control network of hydropower plants and the traditional Internet, such as the complete physical isolation of the industrial control network and the Internet, the higher priority of usability than confidentiality, and a very long update cycle, the traditional network used for the Internet Security protection methods are no...

AI Technical Summary

Problems solved by technology

However, due to the great difference between the industrial control network of hydropower plants and the traditional Internet, such as the complete physical isolation of the industrial control network and the Internet, the higher priority of usability than confidentiality, and a very long update cycle, the traditional network used for the Internet Security protection methods are not suitable for the safe operation requirements of hydropower industrial control networks, such as antivirus software based on virus and Trojan horse feature detection, firewalls based on feature database matching, and situational awareness systems based on malicious attack behavior feature analysis. In the end, it may lead to deletion, blocking, and interference with normal procedures, causing serious accidents such as unit shutdown, or due to the physical isolation of the internal and external networks, the feature database cannot be updated for a long time, resulting in failure of security protection methods and other issues. Therefore, for the security of hydropower industrial control networks The protection method must be analyzed in combination with the actual business characteristics of the hydropower industrial control network in order to formulate a security protection method that not only meets the safety requirements of the hydropower industrial control network and the power industry, but does not affect the normal operation of the actual business of the hydropower plant.

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