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...

Examples

Embodiment Construction

[0052] 1. Evaluation method for invulnerability of power communication network

[0053] By abstracting the components of the power communication network—switching equipment and terminal hosts in power plants or substations—as nodes, and abstracting physical links as edges, an actual power communication network is abstracted into a graph composed of nodes and edges. ,use said, among them ,express a collection of nodes, ,express The set of edges, node degree is the number of edges associated with the node. For the convenience of analysis, on this basis, it is assumed that nodes and edges only have two working states, normal and fault, without any intermediate state; the initial state nodes and edges are in normal working state; the working states of each node and edge are independent of each other.

[0054] The steps to evaluate the invulnerability of the power system communication network are: (1) calculate the network efficiency in the initial state; (2) delete each ...

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...

Examples

Embodiment Construction

[0052] 1. Evaluation method for invulnerability of power communication network

[0053] By abstracting the components of the power communication network—switching equipment and terminal hosts in power plants or substations—as nodes, and abstracting physical links as edges, an actual power communication network is abstracted into a graph composed of nodes and edges. ,use said, among them ,express a collection of nodes, ,express The set of edges, node degree is the number of edges associated with the node. For the convenience of analysis, on this basis, it is assumed that nodes and edges only have two working states, normal and fault, without any intermediate state; the initial state nodes and edges are in normal working state; the working states of each node and edge are independent of each other.

[0054] The steps to evaluate the invulnerability of the power system communication network are: (1) calculate the network efficiency in the initial state; (2) delete each ...

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