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Fast and Accurate Frequency Response Estimation for Large Power System Disturbances Using Second Derivative of Frequency Data...

by Weikang Wang, Wenxuan Yao, Chang Chen, Xianda Deng, Yilu Liu
Publication Type
Journal
Journal Name
IEEE Transactions on Power Systems
Publication Date
Page Numbers
2483 to 2486
Volume
35
Issue
3

Accurate Frequency Response Estimation (FRE) is critical to reliability risk management of large power system disturbances. This letter proposes a measurement-driven approach for FRE by calculating the second derivative of frequency from synchrophasor data. Compared with conventional methods, the proposed method has major advantages of low computational burden and high accuracy, which makes it appropriate for real-time FRE in bulk power systems. The effectiveness of this method is validated with actual synchrophasor data on 96 confirmed historical power system disturbances in the U.S. eastern interconnection.