Dynamic Harmonic Synchrophasor Estimator based on Sinc Interpolation Functions

Chen, L.; Zhao, W.; Wang, Q.; Wang, F.P.; Huang, S.L.

doi:10.1109/tim.2018.2876074

Dynamic Harmonic Synchrophasor Estimator based on Sinc Interpolation Functions

Chen, L.; Zhao, W.; Wang, Q.; Wang, F.P.; Huang, S.L.

Authors

L. Chen

W. Zhao

Dr Qing Wang qing.wang@durham.ac.uk
Associate Professor

S.L. Huang

Abstract

This paper introduces a new dynamic harmonic synchrophasor estimator (DHSE) based on the Shannon sampling theorem. Each dynamic harmonic phasor is modeled as a weighted sum of a series of sinc interpolation functions. Based on this, a bank of finite impulse response filters is designed. They are used to estimate not only the dynamic harmonic synchrophasor but also the harmonic frequency and rate of change of frequency (ROCOF). A model parameter is properly selected to adapt filters' passband and stopband performances for different order harmonics. Frequency responses and simulation tests are used to compare the performance of the DHSE and the Taylor-Fourier transform (TFT). The results show that the DHSE has lower passband ripples and higher stopband attenuation than the TFT. Moreover, under frequency deviation, harmonic oscillation, and frequency ramp conditions, the DHSE is more accurate than the TFT in dynamic harmonic synchrophasor, frequency, and ROCOF estimations.

Citation

Chen, L., Zhao, W., Wang, Q., Wang, F., & Huang, S. (2019). Dynamic Harmonic Synchrophasor Estimator based on Sinc Interpolation Functions. IEEE Transactions on Instrumentation and Measurement, 68(9), 3054-3065. https://doi.org/10.1109/tim.2018.2876074

Journal Article Type	Article
Acceptance Date	Sep 30, 2018
Online Publication Date	Nov 8, 2018
Publication Date	Sep 30, 2019
Deposit Date	Oct 5, 2018
Publicly Available Date	Oct 31, 2018
Journal	IEEE Transactions on Instrumentation and Measurement
Print ISSN	0018-9456
Electronic ISSN	1557-9662
Publisher	Institute of Electrical and Electronics Engineers
Peer Reviewed	Peer Reviewed
Volume	68
Issue	9
Pages	3054-3065
DOI	https://doi.org/10.1109/tim.2018.2876074

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