Flicker Detection Method Based on Windowed Spectral Line Interpolation Modification
The increasing access ratio of new energy equipment brings new challenges to the stable operation of power system.Research on voltage fluctuation and flicker detection methods based on fast Fourier transform is of great significance for power quality assessment and improvement of grid-connected systems.In order to solve the problem of spectrum leakage and low frequency band measurement error,a transient flicker sensitivity measurement method based on windowed spectral line interpolation correction is proposed,and a short-time flicker severity detection method is designed for frequency domain detection,and the influence of frequency resolution on flicker detection accuracy is analyzed.The proposed flicker detection method is verified based on RTLAB,and the accuracy of short-time flicker severity detection is improved by switching frequency resolution.
new energypower qualityvoltage fluctuationflicker detectionfast Fourier transform
NETL
NSTL
万方数据
