ESTIMATION OF POWER-LINE FREQUENCY WITH LOW UNCERTAINTY FOR HIGH HARMONIC DISTORTION OF SIGNALS

Jan Blaska, Milos Sedlacek

Abstract

The paper compares four methods (zerocrossing with pre-filtration, integrated zero crossing, windowed and interpolated FFT, and dynamic parameter estimation with pre-filtration) of instantaneous power-line frequency estimation from the point-of-view of their sensitivity to higher-order harmonic content and to the additive noise and from the point-of-view of their response time. Comparison is based on computer simulations.

Keywords

power-line frequency measurement, interpolated FFT, zero-crossing method, integrated zero-crossing method

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IMEKO-TC4-2001-018.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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