Abstract
In the ubiquitous network environment, the security threats facing the metering automation system are also increasing. The risk assessment of electric energy measurement automation system is an important goal of power grid security, but it faces difficulties such as single hidden danger identification means and lack of dynamic assessment models. To improve the accuracy and rationality of the system risk assessment, this paper realizes the dynamic risk assessment of the electric energy metering automation system. First, a risk assessment index system is established from the three aspects of technology, management, and regulations. Secondly, based on analytic hierarchy process, we analyzed the weight of the risk assessment indicator to obtain the subjective weight of the risk assessment indicator. Then, the Bayes grid method is improved by the method of probability distribution, which quantitatively describe the relationship between parent nodes and child nodes. Through the improved Bayesian grid method, the objective weight of the risk assessment indicator is obtained, and the comprehensive weight of the assessment indicator is calculated through combination weighting, which realizes the comprehensive risk assessment of the measurement automation system. Finally, the simulation experiment analysis and the sensitivity analysis of the proposed model are carried out. The result shows that the safety guarantee goal of the electric energy metering automation system depends to a large extent on the technical reliability.
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Li, W., Wu, S., Ma, Y., Liu, T., Bai, Y., Zuo, J. (2022). Risk Assessment of Electric Energy Metering Automation System Based on Bayesian Network. In: Sun, X., Zhang, X., Xia, Z., Bertino, E. (eds) Artificial Intelligence and Security. ICAIS 2022. Lecture Notes in Computer Science, vol 13340. Springer, Cham. https://doi.org/10.1007/978-3-031-06791-4_38
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