Abstract
The authors have recently presented a new modeling approach, for electrical signals in power systems, which is based on the concept, derived from differential geometry, of the contact between a signal and an “osculating sinusoid”. A difficulty in applying the approach lies in the calculation of the “osculating sinusoid” parameters, when the signal contains noise. In order to overcome this problem, the paper proposes a new computation algorithm for determining the “osculating sinusoid” parameters also in presence of noise on the signal. Accodingly, a new method providing a fast and accurate estimation of the frequency, phase and amplitude for noisy grid signals is developed. The good performance of the method is verified by some significant simulation results.
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