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随着石化企业信息集成度的提高,过程控制系统由封闭走向开放成为主流趋势,但是过程控制系统的安全问题仍然很突出。本文详细分析了当前主要采用的管理网/控制网络的2层结构现状和存在的安全问题,并结合企业信息集成的基础,提出了管理网/生产专网/控制网络的3层网络结构,并给出了生产专网的设计方案以及控制网络的信息安全管理策略。进而采用虚拟化技术来优化生产专网的应用结构。结合企业现有情况,开展了生产专网的建设和案例应用,取得了较好的效果,提高了过程控制系统的安全性。
With the improvement of information integration of petrochemical enterprises, the process control system has become the mainstream trend from the closure to the opening up. However, the safety of the process control system is still outstanding. This paper analyzes in detail the current status and existing security issues of the 2-layer management network / control network which are mainly used at present, and proposes a 3-layer network structure of management network / production / control network based on the basis of enterprise information integration The design scheme of production private network and the information security management strategy of controlling network are given. Then use virtualization technology to optimize the production of private network application structure. Combined with the existing situation of the enterprise, the construction of production private network and case application have been carried out, and good results have been achieved and the safety of the process control system has been enhanced.