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A Method of Attack Detection and Reconfiguration for Power Cyber-Physical System

A technology of physical systems and power information, applied in general control systems, control/regulation systems, instruments, etc., can solve problems such as poor practicability, poor practicability, and difficulty in meeting actual production needs

Active Publication Date: 2022-05-24
NORTHEAST DIANLI UNIVERSITY
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Problems solved by technology

Existing attack detection methods are based on finite length sequences, for example: Chinese patent application number 201910389561.8, its robustness and anti-disturbance performance are not good, it is difficult to meet the actual production needs, the practicability is not strong, and the implementability is poor

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  • A Method of Attack Detection and Reconfiguration for Power Cyber-Physical System
  • A Method of Attack Detection and Reconfiguration for Power Cyber-Physical System
  • A Method of Attack Detection and Reconfiguration for Power Cyber-Physical System

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Embodiment Construction

[0074] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0075] refer to Figure 1-Figure 2 , a method of the present invention for attack detection and reconstruction of a power information physical system, including the following:

[0076] 1) Establish a mathematical model when a power cyber-physical system with three motors and six buses is attacked by a state:

[0077]

[0078] y(t)=Cx(t)+D u u(t) (1)

[0079] where x(t) is the state signal when the power cyber-physical system is under a state attack, y(t) is the output signal when the power cyber-physical system is under a state attack, u(t) is the controlled input signal of the power cyber-physical system, is the differentiation of the state signal when the power cyber-physical system is under state attack, B η n x (t) is the state attack signal of the power cyber-physical system, A, B u , C, D u is the system parameter with appropriate dimensi...

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Abstract

The present invention is a method for attack detection and reconstruction of electric power cyber-physical systems. A novel attack signal reconstruction method of electric power cyber-physical system can not only accurately obtain the reconstructed signal of electric power cyber-physical system attack, but also detect the attack signal exceeding a certain threshold. According to the attack detection logic, the reconstruction The attack signal is used to judge the attack; the present invention also extends this method to the situation where the electric power cyber-physical system is attacked by sensors, and realizes the detection and reconstruction of the electric power cyber-physical system attacked by sensors; the present invention consists of three motors and six busbars Taking the cyber-physical system of electric power as an example to carry out attack detection and reconstruction. It has the advantages of good robustness, excellent anti-interference, strong applicability, high accuracy, and fast response speed.

Description

technical field [0001] The invention relates to the field of information security of a power information physical system, and is a method for attack detection and reconstruction of a power information physical system. Background technique [0002] With the deep integration of the power network and the information network of the power cyber-physical system, the technical means of maliciously attacking power terminal equipment are also increasing. Timely detection of the attack of the power cyber-physical system is of great significance for the safe operation of the system and avoiding economic losses. Existing attack detection methods are based on finite-length sequences, such as: Chinese Patent Application No. 201910389561.8, which have poor robustness and anti-disturbance performance, are difficult to meet actual production needs, have poor practicability, and are poorly implemented. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to overcome the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 李健靳长岭潘坤鹏孙超维苏庆宇
Owner NORTHEAST DIANLI UNIVERSITY
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