Application of Cyber Security in Industrial Control Systems Based on Security Protection Technology for Electrical Secondary System
Zou Chunmin · Power System Technology · 2013
Cyber security scheme is used for the secondary electrical systems of power grids in China widely and successfully and favorable security protection effects have been achieved. There is not only the similarity between general industrial control system and the secondary electrical systems in power grids and but also the difference in demand due to the differences among industrial sectors. Based on the achievements in security protection technologies for the secondary electrical systems and by means of such technological means as enhancing the protection for the border of industrial control network, analyzing communication protocols for industrial control in depth, mining attack signature models of industrial control protocol and establishing a unified security management platform and so on, a general security protection system for industrial control information, which possesses the ability of defense in depth, is constructed. Through simulating both industrial control environment and network attack, the industrial control firewall for key components is researched and tested, and the results show that under the premise of ensuring normal operation of authorized communication of industrial control system the constructed general security protection system can intercept the unauthorized control commands, so it possesses the ability of information security of industrial control systems in depth. Thus, using the constructed general security protection system the cyber security ability of industrial control system to resist the attacks from hack virus can be enhanced, and the risk in industrial equipment failure and damage due to information security attack can be reduced.