RECURSIVE FREQUENCY ESTIMATION TECHNIQUE FOR SYNCHROPHASOR MEASUREMENT APPLICATIONS

Pasquale Cuccaro, Daniele Gallo, Carmine Landi, Mario Luiso, Gianmarco Romano

Abstract

The proper and stable operation of a power grid relies on a efficient voltage and current phasor measurement instrumentation. A key feature of such an instrumentation is the accuracy of frequency measurement. The scope of this paper is to present a technique to track frequency variations of voltage and current phasors. We propose a recursive algorithm based on the Maximum Likelihood estimation of the phase; preliminary results show that its performance is comparable to the Cramer-Rao Lower Bound and can track phase variations over time.

Keywords

synchrophasor measurement, frequency measurements, power system measurement, maximum likelihood, recursive estimation

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IMEKO-WC-2015-TC4-130.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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