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An Estimation Method Against False Data Attacks of Load Frequency Control System

A technology of load frequency control and false data attack, applied in complex mathematical operations, platform integrity maintenance, etc., can solve the problem of lack of sufficient research on attack estimation methods, and achieve external interference suppression, high estimation accuracy, and high application value. Effect

Active Publication Date: 2022-03-01
HANGZHOU INNOVATION RES INST OF BEIJING UNIV OF AERONAUTICS & ASTRONAUTICS
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AI Technical Summary

Problems solved by technology

At present, scholars at home and abroad have done a lot of research on the detection of network attacks on load frequency control systems, but there is still a lack of sufficient research on attack estimation methods.

Method used

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  • An Estimation Method Against False Data Attacks of Load Frequency Control System
  • An Estimation Method Against False Data Attacks of Load Frequency Control System
  • An Estimation Method Against False Data Attacks of Load Frequency Control System

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Embodiment Construction

[0052] The technical solutions in the embodiments of the present invention will be further described in detail below in conjunction with the drawings in the embodiments of the present invention.

[0053] The present invention proposes a method for estimating false data attacks on the load frequency control system. The overall flow chart is as follows figure 1 shown, including the following steps:

[0054] 1. The structural block diagram of the grid load frequency control system is as follows: figure 2 As shown, on this basis, the mathematical model of the power system load frequency control system is established:

[0055] The system frequency dynamic equation is:

[0056]

[0057] Among them, i is the area number, △f i is the frequency deviation, M i is the generator inertia, △P Gi is the generator output power deviation, D i is the equivalent damping coefficient, △P di is the load fluctuation, △P tie-i is the tie line power deviation.

[0058] The turbine dynamic e...

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Abstract

The invention relates to a method for estimating the false data attack of the load frequency control system. Firstly, the mathematical model of the load frequency control system is established according to the dynamic model of the power system; In the case of data injection attack, analyze the impact of the attack signal on the system state equation, and establish a mathematical model of the load frequency control system including the false data injection attack signal; then, design an adaptive observer to estimate the system state and the attack signal; finally, Using Lyapunov stability theory and robust H ∞ The optimization index is based on the linear matrix inequality method, and the observer gain is solved to ensure the convergence and boundedness of the attack signal estimation error of the load frequency control system. The method proposed by the invention can accurately estimate the false data injection attack signal of the load frequency system, and at the same time restrain external interference, has the advantages of simple design and easy engineering realization, and has strong practical value.

Description

technical field [0001] The invention relates to the field of power system operation control, in particular to an estimation method for false data attacks on a load frequency control system. Background technique [0002] With the continuous advancement of smart grid construction, modern information technologies such as mobile Internet and artificial intelligence and advanced communication technologies have been introduced into the power system on a large scale to integrate computing systems, communication networks and the physical environment of the power system to form a real-time perception, A complex system that integrates dynamic control and information decision-making. The extensive network connection of the smart grid and the remote access interface lacking effective security protection make the grid extremely vulnerable to the threat of cyber attacks. In recent years, network security issues have become an important factor that threatens the safe operation of power sy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/55G06F17/16
CPCG06F21/55G06F17/16
Inventor 郭雷叶俊余翔刘偲
Owner HANGZHOU INNOVATION RES INST OF BEIJING UNIV OF AERONAUTICS & ASTRONAUTICS
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