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A polynomial-time method to find the sparsest unobservable attacks in power networks

Author(s): Zhao, Y; Goldsmith, A; Poor, HV

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Abstract: Power injection attacks that alter generation and loads at buses in power networks are studied. The system operator employs Phasor Measurement Units (PMUs) to detect such physical attacks, while attackers devise attacks that are unobservable by such PMU networks. “Unalterable buses”, whose power injections cannot be changed, are also considered in our model. It is shown that, given the PMU locations, the minimum sparsity of unobservable attacks has a simple form with probability one, namely, equation, where equation is defined as the vulnerable vertex connectivity of an augmented graph. The constructive proof allows one to find the entire set of the sparsest unobservable attacks in polynomial time.
Publication Date: 2016
Citation: Zhao, Yue, Andrea Goldsmith, and H. Vincent Poor. "A polynomial-time method to find the sparsest unobservable attacks in power networks." In 2016 American Control Conference (ACC), pp. 276-282. IEEE, 2016. doi:10.1109/ACC.2016.7524928
DOI: 10.1109/ACC.2016.7524928
EISSN: 2378-5861
Pages: 276 - 282
Type of Material: Conference Article
Journal/Proceeding Title: 2016 American Control Conference (ACC)
Version: Author's manuscript



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