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Power monitoring system is an important national infrastructure; its security has a vital position. In recent years, malicious attacks against power information systems emerge in an endless stream, which makes power systems worldwide suffer a major blow. Aiming at the hierarchical structure of the power monitoring system and the security threats it faces, this paper proposes a security immune model based on trusted computing technology. The security analysis shows that the model can guarantee the credibility of the power monitoring system.

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In recent years, the risk of malicious attacks on power monitoring systems has increased, and there have been many attacks on power systems in the world. Aiming at the network interconnection security problem of the core control system, the concept of “security buffer” is introduced, and a network security buffer method forpower monitoring system is proposed, which is composed of three parts: paradigm check, behavior analysis, and dynamic conversion and jointly realizes the multilevel security inspection of interconnection requests. Experimental verification results show that the proposed method has a protective effect on malicious attacks of power monitoring system.