Method for identifying vulnerable coupling link between power grid control system and power primary equipment

Abstract

The invention relates to the field of safe and reliable operation guarantee of an intelligent power grid, and discloses a method for identifying a vulnerability coupling link between a power grid control system and power primary equipment, which comprises the following steps of: 1, establishing a network model for the dependent coupling of the intelligent power grid control system and the power primary equipment, and the network model comprises a power network and an information network; step 2, constructing a vulnerability identification method based on node centrality so as to obtain a node electrical centrality index between nodes in the power network and a proximity centrality index of effective information length between the nodes in the information network; step 3, calculating a comprehensive risk measurement index DLCC (Pi, Ci) based on a power network-information network; and step 4, calculating the comprehensive risk measurement index DLCC (Pi, Ci), finding out the key vulnerability coupling link of the power network-information network and removing the key vulnerability coupling link. According to the method, the robustness of the intelligent power grid control system is improved to the maximum extent, and the probability of cascade faults is reduced.

Description

technical field [0001] The invention relates to the field of safe and reliable operation assurance of smart grids, in particular to a method for identifying vulnerable coupling links between a grid control system and primary power equipment. Background technique [0002] The smart grid has now developed into a grid cyber-physical system (cyber-physicalpower system) formed by the deep integration of the information network (that is, the power communication network and the power equipment monitoring / control information system) and the power network (that is: the power primary system). system, CPPS). With the continuous expansion of the application range of communication and control technology in the power system, the interdependence between the information network and the power network has been deepened, mainly as follows: the power network nodes provide energy support for the control network nodes, and the operation of the power network is not only limited by the reliability ...

AI Technical Summary

Problems solved by technology

The main technical problems to be solved by the present invention are as follows: first, how to construct a vulnerable transmission link identification method that can truly reflect the power flow distribution characteristics of power primary equipment according to the electrical characteristics and topology characteristics; importance, constructing a vulnerable control link identification method that can truly reflect the importance of nodes in the smart grid control system; third, how to comprehensively consider the interdependence and coupling between the smart grid control system and primary power equipment, and construct a method that can truly reflect its adverse effects on the Identification Method of Vulnerable Coupling Links in Smart Grid Based on Mutual Transmission of Side Networks

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