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arXiv · 2301.05781

Analysis of November 21, 2021, Kaua`i Island Power System 18-20 Hz Oscillations

Shuan Dong·Bin Wang·Jin Tan·Cameron J. Kruse·Brad W. Rockwell·Anderson Hoke
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Abstract

This letter discusses the 18-20 Hz oscillation event at 05:30 am on November 21, 2021, in Kaua`i's power system following the trip of an oil power plant. As far as the authors are aware, this is the first report of a transmission system-wide subsynchronous oscillation driven by inverter-based resources (though the system in question is relatively small). In this letter, we leverage two data-based methods-the dissipating energy flow method and the sub/super-synchronous power flow method-to locate the sources of the oscillation. Also, we build an electromagnetic transient model of the Kaua`i power system and replay the 18-20 Hz oscillation. Finally, we propose two mitigation methods and validate their effectiveness via numerical simulation.

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Shuan Dong, Bin Wang, Jin Tan, Cameron J. Kruse, Brad W. Rockwell, Anderson Hoke. 2023-01-13. Analysis of November 21, 2021, Kaua`i Island Power System 18-20 Hz Oscillations. https://arxiv.org/abs/2301.05781

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