Electric power CPS structure communication vulnerability evaluation method based on graph theory

A fragility, power technology, applied in data processing applications, instruments, computing, etc., can solve problems such as lack of dynamics and integrity
CN111435478APending Publication Date: 2020-07-21STATE GRID HEBEI ELECTRIC POWER CO LTD +2
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
STATE GRID HEBEI ELECTRIC POWER CO LTD
Publication Date
2020-07-21

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Abstract

The invention discloses an electric power CPS structure communication vulnerability evaluation method based on a graph theory. The evaluation method comprises the following steps: 1, determining electric power CPS topological structure data and an interaction relationship between a power side and an information side; 2, identifying an initial risk source emergence node of the power side; 3, determining a maximum connected set in the power side network after the initial risk source node emerges; 4, removing nodes which do not belong to the maximum connected set in the power side; 5, removing the nodes losing the interaction relationship with the information side from the information side; 6, determining a maximum connected set in the information side network; 7, removing nodes which do notbelong to the maximum connected set in the information side; 8, rejecting the nodes losing the interaction relationship with the connected set in the power side; 9, outputting the number of failure nodes in the topological structure after risk fault transmission and the proportion of the number of failure nodes to the total number of initial power information nodes; and 10, evaluating the connectivity vulnerability of the electric power CPS topological network structure.
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Description

Technical field

[0001] The invention relates to the technical field of power system application management, in particular to a method for evaluating the structural connectivity vulnerability of power and power CPS (cyber-physical fusion system) based on graph theory. Background technique

[0002] At present, the formation of power CPS is a process of continuous innovation and exploration. It is also a complex and slow process. There must be various risk factors, such as physical risk sources on the power side, information risk sources on the information side, and external environment. Risk sources and risk sources in the process of power information interaction will cause the failure of the power information system or the physical system, and then induce serious consequences. Therefore, it is particularly important to evaluate the structural vulnerability of the power information and physical integration system.

[0003] While the power industry is paying more and more attention to...

Claims

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