Controlled Islanding under Complete and Partial False Data Injection Attack Uncertainties against Phasor Measurement Units

Sagnik Basumallik (), Sara Eftekharnejad and Makan Fardad
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Sagnik Basumallik: Department of Computer Science and Electrical Engineering, West Virginia University, Morgantown, WV 26506, USA
Sara Eftekharnejad: Department of Electrical Engineering and Computer Science, Syracuse University, Syracuse, NY 13210, USA
Makan Fardad: Department of Electrical Engineering and Computer Science, Syracuse University, Syracuse, NY 13210, USA

Energies, 2022, vol. 15, issue 15, 1-27

Abstract: The widespread application of phasor measurement units has improved grid operational reliability. However, this has increased the risk of cyber threats such as false data injection attack that mislead time-critical measurements, which may lead to incorrect operator actions. While a single incorrect operator action might not result in a cascading failure, a series of actions impacting critical lines and transformers, combined with pre-existing faults or scheduled maintenance, might lead to widespread outages. To prevent cascading failures, controlled islanding strategies are traditionally implemented. However, islanding is effective only when the received data are trustworthy. This paper investigates two multi-objective controlled islanding strategies to accommodate data uncertainties under scenarios of lack of or partial knowledge of false data injection attacks. When attack information is not available, the optimization problem maximizes island observability using a minimum number of phasor measurement units for a more accurate state estimation. When partial attack information is available, vulnerable phasor measurement units are isolated to a smaller island to minimize the impacts of attacks. Additional objectives ensure steady-state and transient-state stability of the islands. Simulations are performed on 200-bus, 500-bus, and 2000-bus systems.

Keywords: controlled islanding; cyber security; emergency control; false data attack; wide-area control and stability; phasor measurement units; uncertainty (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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