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- W4286569322 abstract "The modern electrical grid is a complex cyber-physical system, and thus is vulnerable to measurement losses and attacks. In this paper, we consider the problem of detecting false data injection (FDI) attacks and bad data in unobservable power systems. Classical bad-data detection methods usually assume observable systems and cannot detect stealth FDI attacks. We use the smoothness property of the system states (voltages) w.r.t. the admittance matrix, which is also the Laplacian of the graph representation of the grid. First, we present the Laplacian-based regularized state estimator, which does not require full observability of the network. Then, we derive the Laplacian-regularized generalized likelihood ratio test (LR-GLRT). We show that the LR-GLRT has a component of a soft high-pass graph filter applied to the state estimator. Numerical results on the IEEE 118-bus system demonstrate that the LR-GLRT outperforms other detection approaches and is robust to missing data." @default.
- W4286569322 created "2022-07-22" @default.
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- W4286569322 date "2022-06-20" @default.
- W4286569322 modified "2023-10-05" @default.
- W4286569322 title "Detection of False Data Injection Attacks in Unobservable Power Systems by Laplacian Regularization" @default.
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- W4286569322 doi "https://doi.org/10.1109/sam53842.2022.9827810" @default.
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