Enhancing Resilience of LFC Systems Against False Data Injection Attacks
via Active Disturbance Rejection Control
Abstract
In response to the security threats faced by multi-area interconnected
power systems, particularly various potential attacks, a security
protection scheme based on an extended state observer is proposed. The
proposed approach extends the state vector by introducing new variables,
allowing disturbances and attacks to be treated as additional state
variables within the system. Through the utilization of the extended
state observer, separate estimations of interference and external
attacks can be obtained, thereby enhancing the power system resilience
against potential threats. Based on this, a threshold-based attack
detection algorithm is proposed. In simulation experiments, the model of
the multi-area interconnected power system is studied under various
attacks such as step attacks, ramp attacks, and periodic attacks using
active disturbance rejection control (ADRC). Based on the performance
comparison between traditional PI control and ADRC, it has been
demonstrated that the ADRC method exhibits significant advantages in
improving system response speed and enhancing control accuracy.