Self-adaptive damping control method and system for resisting false data injection attack

Abstract

The invention discloses a self-adaptive damping control method and system for resisting a false data injection attack. The method comprises: collecting a wide-area measurement signal which may be subjected to the false data injection attack, carrying out the attack detection, attack source confirmation and data recovery of the wide-area measurement signal through a linear state estimation algorithm, and generating an estimation input signal; and amplifying and phase-shifting the estimated input signal, and generating a control signal after the estimated input signal passes through a GrHDP neural network, so as to suppress the low-frequency oscillation of the power system. The linear state estimator performs distributed state estimation on a local power system to ensure that the integrity and authenticity of a measurement signal can still be maintained when facing various types of false data injection attacks, and the authenticity and availability of a remote signal are ensured; and onthe other hand, the wide-area damping controller designed by adopting the GrHDP algorithm can exert good low-frequency oscillation suppression performance for a double-weak damping mode on the premiseof not needing a power system data model, and adapts to different operation 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...

AI Technical Summary

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

Images