Comparison of frequency estimation algorithms for power quality assessment

Classification of power quality events – A review

“…Hybrid method enables jointly harmonics and transients analysis. Many frequency estimation techniques and spectral estimation of interharmonics have been proposed in [38,39] respectively. In [24], authors discussed the analysis of voltage disturbance recordings in the time-frequency domain and in the time-scale domain.…”

Non recursive multi-harmonic least squares fitting for grid frequency estimation

“…Moreover, NRLS2 has in most cases better performance compared with the ip-DFT and the Park's method. These two algorithms represent in the literature the best compromise between accuracy and computational demand [6,7,9].…”

“…In [6] a comparison of different algorithms shows as the interpolation of DFT spectrum in the neighborhood of the fundamental tone is a good compromise between accuracy and computational complexity. It can be found several approaches based on the method of least squares.…”

Power System Frequency Estimation Algorithm for Electric Energy Metering of Nonlinear Loads

“…In the past several decades, a variety of algorithms [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] for frequency estimation have been reported. Generally, the performance of a frequency estimation algorithm can be evaluated through static and dynamic tests.…”

“…Other algorithms, such as the modified LMS algorithm [23], the least mean phase (LMP) algorithm [24] and the multi-harmonic least-squares fitting algorithm [25] are also reported. Reference [26] presents reviews of the existing several methods, outlining strengths and weaknesses of each one.…”