An adaptive damping control method and system for resisting false data injection attacks

Abstract

The invention discloses an adaptive damping control method and system for resisting false data injection attacks, including collecting wide-area measurement signals that may be attacked by false data injection, using a linear state estimation algorithm to perform attack detection on the wide-area measurement signals, Attack source confirmation and data recovery to generate estimated input signals; the estimated input signals are amplified and phase-shifted, and control signals are generated after passing through the GrHDP neural network to suppress low-frequency oscillations of the power system. The linear state estimator ensures that the measurement signal can still maintain its integrity and authenticity in the face of various types of false data injection attacks by performing distributed state estimation on the local power system, ensuring the real availability of remote signals; on the other hand , the wide-area damping controller designed with the GrHDP algorithm can exert good low-frequency oscillation suppression performance for double weak damping modes without the need for a power system data model, and can adapt to different operating conditions and measurement noise.

Description

technical field [0001] The invention belongs to the field of power system control, and more specifically relates to an adaptive damping control method and system for resisting false data injection attacks. Background technique [0002] Designing a wide-area damping controller using remote signals collected by a wide-area measurement system is a very effective measure to suppress low-frequency oscillations between areas. As the cyber-physical fusion characteristics of power systems become more and more obvious, and the interaction of various information becomes more and more complex, network attacks become a key factor that threatens the effect of wide-area damping controllers. Attackers cause wrong decision-making of the controller by invading the phase angle measurement unit, communication lines, etc., so as to achieve the same effect as destroying the primary equipment on the physical side, seriously affecting the stable operation of the power system, and even causing larg...

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Problems solved by technology

[0004] Aiming at the defects of the prior art, the purpose of the present invention is to provide an adaptive damping control method and system against false data injection attacks, aiming to solve the problem caused by the measurement signal of the polluted wide-area measurement system under different false data injection attacks. Wrong Decision-Making Problem of Wide-area Damping Controller

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