Invulnerability Evaluation Method for Power Communication Network

Abstract

A method for evaluating the invulnerability of a power communication network, which includes the following steps: a. abstracting the components of the power communication network into nodes, and abstracting the physical links into edges; b. calculating the network efficiency in the initial state; c. deleting each Calculate the network efficiency of the newly generated graph for each node and each edge; d. Calculate the fault impact degree of each node and each edge; e. Calculate the invulnerability of the entire network ; f. Utilize the invulnerability of the whole network Evaluate the invulnerability of power communication network. The invention not only considers the importance of each component in the power communication network to the network performance, but also considers the role of the link in the network, so it can reflect the entire damage process of the power communication network, and the method eliminates the one-sidedness of the existing evaluation methods, The evaluation results are more objective and reasonable. At the beginning of the topology design of the power communication network, using this method to quantitatively analyze the network invulnerability performance can optimize the design scheme of the network and improve the invulnerability of the network.

Description

technical field [0001] The invention relates to a method for evaluating the ability of a power communication network to maintain communication in the event of failure, and belongs to the field of communication technology. Background technique [0002] The power communication network is a dedicated communication network serving the power industry. It is composed of switching equipment and terminal equipment in power plants, substations, and upper and lower multi-level power departments connected through transmission systems. Its safety and reliability are consistent with the safe and stable operation of the power grid. closely related. With the rapid development of the smart grid, more and more information needs to be transmitted by the power communication network, which puts forward higher requirements on the ability of the power communication network to maintain communication in the event of a partial failure. Therefore, invulnerability has become one of the important fact...

AI Technical Summary

Problems solved by technology

Since the impact of link faults on network performance is smaller than that of node faults, and there are many different types of links, the weights are difficult to determine, so people ignore the impact of link faults on the network. However, with the power communication With the rapid increase of network services, the power communication network links play an important role in undertaking business transmission channels, and the network performance changes caused by their failures cannot be ignored. Therefore, the invulnerability measurement index should be able to reflect the entire damage process of the power communication network. Including the factors of node and link failures, the existing evaluation methods for the invulnerability of power communication networks need to be improved urgently

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