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A new self-tuning algorithm for the frequency estimation of distorted signals

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3 Author(s)
Terzija, V. ; Dept. of Electr. Eng., Belgrade Univ., Serbia ; Djuric, M. ; Kovacevic, B.

This paper introduces a new self-tuning digital signal processing algorithm for local power system frequency deviation measurement. The algorithm is derived using the nonrecursive least error square technique accompanied with an updating procedure, which generally improves the algorithm properties: the measurement range; the immunity to a random noise; and the accuracy. The algorithm developed takes into account the components of the fundamental frequency, the second through the M-th harmonics and a decaying DC component, so it could be used for the real-time distorted signals frequency estimation as well as for the harmonics measurement. To demonstrate the efficiency of the algorithm proposed, the results of the computer simulated, experimentally obtained and real-life data records tests are presented

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Power Delivery, IEEE Transactions on  (Volume:10 ,  Issue: 4 )