Stochastic Measurement of Power Grid Frequency Using a Two-Bit A/D Converter

What is it about?

This paper presents a new method for measurement of power grid frequency based on the use of three complementary strategies: stochastic A/D conversion, finite impulse response filtering and signal frequency estimation using zero-crossing detection. Although such an amalgamated concept offered great flexibility in choice of system parameters, this paper presents the variant with the two-bit A/D converter, which requires the simplest hardware. It is shown that this solution is highly robust against signal distortions, even when harmonic distortion factors have a value of 100%.

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