Post-disaster island division method considering information-energy coupling node importance

Abstract

The invention relates to a post-disaster island division method considering the importance degree of information-energy coupling nodes. The method comprises the following steps: 1) constructing a two-network coupling model of an electric power communication network and an electric power network; 2) adopting a multi-angle and multi-index and subjective and objective combined evaluation method to obtain an information-energy coupling node importance degree; and 3) constructing an island division model according to the information-energy coupling node importance to perform active power distribution network post-disaster island division. Compared with the prior art, the method has the advantages of effectively avoiding evaluation from a single angle of information or energy, effectively obtaining system state information, improving the capability of the system to cope with natural disasters and the like.

Description

technical field [0001] The invention relates to the technical field of distribution network elastic improvement, in particular to a post-disaster island division method for an active distribution network taking into account the importance of information-energy coupling nodes. Background technique [0002] With the change of environment and climate, all kinds of extreme weather disasters occur frequently, and the characteristics of distribution network, such as wide distribution, many lines, and huge number of users, determine that it is extremely vulnerable to the threat of natural disasters, resulting in large-scale power outages. Therefore, it is necessary to form a microgrid by means of island division to achieve reliable and continuous power supply to key loads and improve the resilience of distribution networks after natural disasters. [0003] When the active distribution network fails, the active distribution network is divided into multiple micro-grids by means of is...

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Problems solved by technology

The current research only measures the importance of nodes from a single electrical point of view, such as grid topology and load size, when performing island division, and does not involve the coupling of information and energy, but the failure of the information system will lead to a significant increase in the reliability of the physical system. In view of the deep coupling between the power network and the power communication network, it is necessary to consider the coupling of energy and information in terms of node importance when dividing islands

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