An electric power communication network survivability evaluating method

Abstract

An electric power communication network survivability evaluating method comprises the following steps: a, parts of an electric power communication network are abstracted as nodes, and physical links are abstracted as edges; b, network efficiency in an original state is calculated; c, each node and each edge are deleted in order, and network efficiency of a newly generated graph is calculated; d, fault influence degrees of each node and each edge are calculated; e, a whole-network survivability degree is calculated; and f, evaluation is carried out on the survivability of the electric power communication network through utilizing the whole-network survivability degree. According to the electric power communication network survivability evaluating method of the invention, the importance degree of each part in the electric power communication system for network performance is taken into consideration, and at the same time, effects of the links in the network are taken into consideration, so that a whole destroy process of the electric power communication system can be reflected. The method eliminates one-sidedness of existing evaluating methods. According to the method of the invention, the evaluated results are more objective and reasonable. At the beginning of an electric power communication network topological structure design process, the method is utilized to carry out quantitative analysis on the survivability of the network, and accordingly a design scheme of the network can be optimized and the survivability degree of the network is raised.

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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