Dynamic Harmonic Synchrophasor Estimator based on Sinc Interpolation Functions

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

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
• Public URL: https://durham-repository.worktribe.com/output/1312596