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Reliability evaluation method for key infrastructures

An infrastructure and reliability technology, applied in the field of system reliability

Active Publication Date: 2018-05-29
BEIHANG UNIV
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Problems solved by technology

Finally, this method can be applied to systems with any degree of fault correlation, while traditional reliability analysis methods mostly assume that faults are independent or weakly correlated

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  • Reliability evaluation method for key infrastructures
  • Reliability evaluation method for key infrastructures
  • Reliability evaluation method for key infrastructures

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Embodiment Construction

[0037] In order to make the technical problem to be solved in the present invention, the technical scheme clearer, the following will be combined with the attached figure 1 The method flow chart and attached figure 2 The specific implementation cases are described in detail.

[0038] The present invention is a method for evaluating the reliability of critical infrastructure, that is, a method for evaluating the reliability of critical infrastructure based on the fault correlation network seepage model, see figure 1 As shown, its specific implementation steps are as follows:

[0039] Step 1: Obtain the historical failure data of system nodes, determine the appropriate number of nodes, time interval and spatial distribution, so as to obtain the 0-1 failure time series of each node;

[0040] The present invention takes a coupling system composed of two infrastructure systems A and B as an example. Select N in the two systems respectively A , N B system nodes, obtain a 0-1 f...

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Abstract

The invention provides a reliability evaluation method for key infrastructures based on a fault correlation network seepage model. The method comprises: step one, acquiring historical failure data ofsystem nodes and determining the node number, a time interval, and spatial dis multi-level fault correlation network distribution; step two, calculating certain threshold values for edge weights and time delays based on a fault correlation calculation formula and forming a directed and weighted; and step three, using an edge weight of a removed edge corresponding to a certain-scale residual maximum connection group as an index for evaluating the typical intensity of the coupling relationship of the whole system. With the reliability evaluation method, the reliability of the coupling system formed by different key infrastructure (sub) systems is evaluated effectively; the important degrees of different system nodes in fault event propagation inside the (sub) systems and between different (sub) systems are disclosed; and a node protection problem in the complicated infrastructure system of the modern society is solved.

Description

technical field [0001] The present invention proposes a method for evaluating the reliability of critical infrastructure, which is a reliability evaluation method for critical infrastructure based on a fault-related network seepage model, that is, a method for evaluating the reliability of critical infrastructure based on a fault-related network seepage model, which belongs to System reliability technology field. Background technique [0002] Critical infrastructure generally refers to the most important infrastructure systems related to the normal and safe operation of the country's economy and society in the fields of communication, electricity, energy, transportation, and water supply. Therefore, evaluating the security risks of critical infrastructures and improving the system reliability of critical infrastructures are major issues for realizing national security and normal social operation. [0003] At present, many countries are in a new era of rapid development of I...

Claims

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Application Information

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IPC IPC(8): G06Q10/06
CPCG06Q10/06395
Inventor 周栋李大庆康锐
Owner BEIHANG UNIV
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