Information physical coordinated attack analysis method in protection of intelligent power grid circuit

Abstract

The invention relates to an information physical coordinated attack analysis method in protection of an intelligent power grid circuit. The method comprises the steps of (a) information physical coordinated attack, which mainly comprises the following steps of firstly, disconnecting a target circuit, tampering the switch state information of the circuit to ON from OFF; and secondly, changing a part of measurement data of a power system by false data attack so that a dispatching center is difficult to find out disconnection of the circuit by employing a state estimation method; and (b) buildinga dual-layer planning model constructed by interconnection between an attacker and the dispatching center. According to the method, the dual-layer planning model is mainly built, the most destructiveattack corresponding to a special transmission line is found out, and the dual-layer planning model is converted to a single-layer hybrid integer linear planning model by employing a Karush-Kuhn-Tucker conditioner and a Fortuny-Amat-McCarl method and is solved.

Description

technical field [0001] The invention relates to a cyber-physical coordinated attack analysis method in line protection of a smart grid, and belongs to the technical field of communication of electric power transmission systems. Background technique [0002] Cyber ​​attacks are one of the main threats to the smart grid. Attackers can launch attacks from various aspects such as information collection, information transmission, intelligent control, power grid and user interaction, and are not affected by factors such as weather, geography and time. In the smart grid, network attacks can not only destroy the relevant functions of the information system, but also penetrate into the primary power system through the information system, endangering the security and stability of the power system operation. [0003] Coordinated Cyber-Physical Attacks (Coordinated Cyber-Physical Attacks) is a new type of network attack that has emerged in recent years. On the one hand, the attacker des...

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Problems solved by technology

However, on the one hand, when analyzing cyber-physical coordinated attacks, the existing research requires the coordination of various network attacks, topological attacks and load redistribution attacks, which increases the complexity of the analysis of cyber-physical coordinated attacks; on the other hand, The blackout in Ukraine shows that cyber-physical coordinated attacks can lead to blackouts and increase the operating costs of the entire power system

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