Frequency Estimation for Sychrophasor Measurement Units in Power System
نویسندگان
چکیده
Frequency estimation is a crucial signal processing technique in Phasor Measurement Units (PMU). In this report, we propose a new algorithm for frequency estimation by interpolation of zero-padded discrete Fourier transform (DFT) samples. The bias performance of the proposed estimator is analyzed and an iterative algorithm is further proposed to reduce the bias to an arbitrarily small level. Simulations show that our proposed algorithm have the best performance among existing ones in the literature. In addition, the performance of our algorithm can satisfy the requirements of standard C37.118.1, with short observation windows.
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