Attack reconstruction and elasticity control method of multi-area load frequency system

Abstract

The invention discloses an attack reconstruction and elastic control method for a multi-region load frequency system, and the method comprises the steps: S1, building a load frequency control mathematical model of a multi-region power system under the condition of no network attack; s2, establishing a mathematical model of DoS attack and FDI attack; s3, constructing mathematical models of a state observer and an attack observer, jointly estimating the system state and the FDI attack, considering the influence of the two, and constructing a controller with attack compensation; s4, considering the influence of the DoS attack and the FDI attack, and establishing a multi-region power system load frequency control mathematical model under the hybrid attack; and S5, designing a controller design criterion of the multi-region power system load frequency control system meeting the H infinity performance index, and obtaining a controller gain matrix K, a state observer gain matrix G and an attack observer gain matrix L with an attack compensation function. According to the control method disclosed by the invention, under the DoS and FDI mixed attack, stable frequency, safety and reliable operation of the multi-region power system are ensured.

Description

technical field [0001] The invention relates to the technical field of multi-area power system controller design, in particular to an attack reconfiguration and elastic control method for a multi-area load frequency system. Background technique [0002] In recent years, the scale of modern power systems has become larger and larger, forming a large-scale multi-regional power system composed of several regional power systems interconnected. In this large-scale multi-regional power system, in order to ensure the quality of power supply and make each region The frequency between them is stable, and the load frequency control technology is applied in it. With the development of new smart devices and network communication technologies, the traditional power system has gradually developed into a smart grid, which has greatly improved the efficiency, sustainability and reliability of the entire power system; however, the application of communication networks and advanced informatio...

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Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides an attack reconfiguration and elastic control method of a multi-area load frequency system, which solves the problem that the multi-area power system cannot operate stably under the condition of external malicious attacks

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