Iterative Interpolated DFT-based Frequency Estimator for Electrical Waveform Affected by Decaying DC Offset |
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| Daniel Belega, Dario Petri, Dominique Dallet |
- Abstract:
- An iterative Interpolated Discrete Fourier Transform (IpDFT)-based frequency estimator of a sinewave affected by decaying dc offset is proposed in this paper. The accuracies of the proposed procedure and the classical IpDFT algorithm are compared with each other under different steady-state and dynamic testing conditions suggested in the IEC/IEEE 60255-118.1:2018 - Synchrophasors for power systems – Measurements. A decaying dc offset is added to the test signals suggested in the Standard and off-nominal frequency is considered. Procedure accuracy is analyzed through simulations by considering the maximum of the absolute value of the frequency error. Comparison with the frequency error thresholds proposed in the Standard is also performed.
- Download:
- IMEKO-TC4-2022-49.pdf
- DOI:
- 10.21014/tc4-2022.49
- Event details
- IMEKO TC:
- TC4
- Event name:
- TC4 Symposium 2022
- Title:
25th IMEKO TC4 Symposium and 23nd International Workshop on ADC and DAC Modelling and Testing (IWADC)
- Place:
- Brescia, ITALY
- Time:
- 12 September 2022 - 14 September 2022