期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：252
期号：3
页码：1-9
DOI：10.1088/1755-1315/252/3/032184
出版社：IOP Publishing
摘要：In the power harmonic detection algorithm, the disadvantages of Fast Fourier Transform (FFT) are difficult to accurately detect in non-synchronous sampling and non-integer periodic truncation to need be solved. Therefore, this paper considers various advantages and disadvantages of traditional window functions such as Hanning window and new window function, for example: Blackman-Harris window and Nuttall window. Four three-order Nuttall window functions was adopted, which are more suitable for power harmonic analysis. Meanwhile, the double-line interpolation analysis and algorithm correction of the Nuttall window function are carried out. Finally, the algorithm is compared and simulated. By using this algorithm the phase error is stable at 0.00001°, and the amplitude error is almost 0, which fully meets the requirements of harmonic measurement standards.
