Information security risk propagation control method and apparatus based on infectious disease model

Abstract

The present invention discloses an information security risk propagation control method and apparatus based on an infectious disease model. The method comprises: generating a topology of a power information physical system and expressing the topology as an undirected weighted sparse adjacency matrix; calculating vulnerability, relevance and tolerance of nodes; according to a propagation matrix model of infectious diseases, constructing a node risk propagation matrix; calculating the proportion of dead nodes, comparing the proportion of dead nodes with the preset proportion value of the dead nodes, and when the proportion of dead nodes is greater than the preset proportion value of the dead nodes, evaluating a fault size of nodes in the power grid; and when the proportion of dead nodes is smaller than the preset proportion value of the dead nodes, calculating the proportion of immune nodes in the neighbor nodes of the susceptible nodes and the time required for the node to be infected,determining whether the infected node is converted into an immune node and a dead node, and evaluating and outputting the obtained fault size of nodes in the power grid. According to the method and apparatus disclosed by the present invention, the risk range in the power system can be accurately obtained, and the attacked node can be timely remediated, so that the information security of the powergrid system can be better ensured.

Description

technical field [0001] The invention relates to an information security risk propagation control method and device based on an infectious disease model, and belongs to the technical field of power system information security. Background technique [0002] With the rapid development of computer network and Internet technology, the informatization construction of the electric power industry has also received extensive attention. Its data and information resources not only support the normal operation of the overall system of the power industry, but also become the core key assets for the survival and development of the power industry. As one of the most important basic projects in the country, the power system has always faced internal and external security threats. Information security issues cannot be ignored. Once key data and information leaks occur, the consequences will be disastrous. At present, the standards and norms of power system information security construction ...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, provide an information security risk propagation control method and device based on an infectious disease model, and solve the problem that the existing information security risk propagation mechanism cannot accurately and quickly determine the node For the problem of fault scale, by using this method, the risk under the complex nodes of the distribution network can be quickly evaluated to ensure the safe and stable operation of the distribution network

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