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Frequency estimation and tracking by two-layered iterative DFT with re-sampling in non-steady states of power system

Crossref DOI link: https://doi.org/10.1186/s13638-018-1320-1

Published Online: 2019-02-01

Published Print: 2019-12

Update policy: https://doi.org/10.1007/springer_crossmark_policy

Authors

Li, Hui http://orcid.org/0000-0002-1846-7958
Funding

Funding for this research was provided by:

High Tech. of Key Research and Development Project of Hainan Province (ZDYF2018012)

National Natural Science Foundation of China (61661018)
License Information

Text and Data Mining valid from 2019-02-01
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Article History

Received: 6 September 2018

Accepted: 11 December 2018

First Online: 1 February 2019

Competing interests

: The authors declare that they have no competing interests.A small part of this paper was submitted to 2018 International Conference on Communications, Signal processing and Systems (CSPS 2018) previously. However, the vast majority of this study is original, and new algorithms and scenarios are introduced firstly in the paper. In this paper, a frequency estimation method named exponential sampling is amended to calculate the initial sampling frequency in the inner-layered process of the DFT iteration. Performance of new algorithm were studied and analyzed in some non-steady states of different scenarios (e.g., sudden and random frequency change, signal modulated by a cosine signal).

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