Novel Three-Point Interpolation DFT Method for Frequency Measurement of Sine-Wave

This paper proposes a novel three-point interpolation discrete Fourier transform for accurate power system frequency measurement. The accurate formula of the proposed frequency measurement method is derived by using the maximum sidelobe decay windows. Moreover, the influence of white noise on the pr...

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Veröffentlicht in:	IEEE transactions on industrial informatics 2017-10, Vol.13 (5), p.2333-2338
Hauptverfasser:	Wen, He, Li, Chengcheng, Tang, Lu
Format:	Artikel
Sprache:	eng
Schlagworte:	Discrete Fourier transforms Fourier transforms Frequency measurement Informatics interpolated discrete Fourier transform (DFT) Interpolation maximum sidelobe decay window (MDW) Military communications Military training noise Signal to noise ratio Systematic errors Systematics White noise
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Beschreibung
Zusammenfassung:	This paper proposes a novel three-point interpolation discrete Fourier transform for accurate power system frequency measurement. The accurate formula of the proposed frequency measurement method is derived by using the maximum sidelobe decay windows. Moreover, the influence of white noise on the proposed frequency measurement is analyzed by deducing the expression of frequency measurement variance. The systematic errors and variances of frequency measurement are analyzed by simulation.
ISSN:	1551-3203 1941-0050
DOI:	10.1109/TII.2017.2681690