Wide-frequency harmonic measurement method based on window
interpolation FFT and Taylor least squares

Jinsheng Li; Hao Liu

doi:10.1117/12.3014900

4 March 2024 Wide-frequency harmonic measurement method based on window interpolation FFT and Taylor least squares

Jinsheng Li, Hao Liu

Proceedings Volume 12981, Ninth International Symposium on Sensors, Mechatronics, and Automation System (ISSMAS 2023); 129811L (2024) https://doi.org/10.1117/12.3014900
Event: 9th International Symposium on Sensors, Mechatronics, and Automation (ISSMAS 2023), 2023, Nanjing, China

Abstract

The use of tens of thousands of power electronic equipment and large-scale new energy has already caused tens of thousands of harmonics into the traditional power system, which has brought challenges to the monitoring of electrical quantities in the power system. Aiming at the problem that the measurement accuracy of traditional wide-frequency measurement algorithms is greatly lost in complex situations such as wide-frequency oscillation, a time-frequency domain dynamic phasor estimation method based on Window Interpolation FFT and Taylor Least Squares is proposed. First, a fast Fourier transform is performed on the electrical signal to sense the spectrum range of the signal, and then the dominant frequency band is obtained based on energy screening, according to which the sampling rate and model order of the Taylor least squares algorithm is selected. Next, the amplitude and phase position of each component is obtained by Taylor’s least squares. Finally, the simulation is carried out under steady and dynamic conditions concerning the IEEE standard of the fundamental wave, and it is proved that the algorithm can accurately obtain the time domain index and change trend of each harmonic and has strong practicability, which provides an effective means for the analysis of power grid wide-frequency oscillation.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jinsheng Li and Hao Liu "Wide-frequency harmonic measurement method based on window interpolation FFT and Taylor least squares", Proc. SPIE 12981, Ninth International Symposium on Sensors, Mechatronics, and Automation System (ISSMAS 2023), 129811L (4 March 2024); https://doi.org/10.1117/12.3014900

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available