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Computationally Efficient Synchrophasor Estimation: Delayed In-Quadrature Interpolated DFT
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DOI：10.1109/TIM.2023.3338668.png)
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Abstract
En 中文
This article proposes a synchrophasor estimation (SE) algorithm that leverages the use of a delayed in-quadrature complex signal to mitigate the self-interference of the fundamental tone. The estimator, which uses a three-point IpDFT combined with a three-cycle Hanning window, incorporates a new detection mechanism to iteratively estimate and remove the effects caused by interfering tones within the out-of-band interference (OOBI) range. The main feature of the method is its ability to detect interfering tones with an amplitude lower than that adopted by the IEC/IEEE Std. 60255-118, this detection being notably challenging. Furthermore, it simultaneously satisfies all the accuracy requirements for the P and M phasor measurement unit (PMU) performance classes while offering a reduction in the total computational cost compared with other state-of-the-art techniques.
Keywords:
Discrete Fourier transform
IEC/IEEE Std.
60255-118-1-2018
interpolated DFT
phasor measurement unit (PMU)
quadrature signal generator
synchrophasor estimation (SE)
Journal
IF:
5.9
Papers:
1.9W
Citations:
5.8W