Identification of Important Power Grid Nodes Considering Overlapping and Coupling Based on Analytic Hierarchy Process

Abstract

The coupling of power grid and information network has brought great convenience to mankind, but for the power grid large-scale power outages have become a great menace. It is caused by the failure of some nodes in the network, which usually causes a large-scale power outage, resulting in a cascading effect, which ultimately gives rise to the paralysis of some or the entire power coupling system to some extent. Failures of different nodes in the network also have different ultimate impacts on the network. Therefore, from the cost point of view, it is necessary to analyze and identify important nodes and protect them in advance. In this paper, An important node identification method based on analytic hierarchy process for coupled networks is proposed, while considering the topological characteristics and electrical characteristics of nodes in coupled networks, and verifying the feasibility of algorithms based on IEEE system data combined with CRITIC weighting method, which can effectively identify important nodes and some relatively important nodes in coupled networks, which has important theoretical and engineering value.