Harmonic Analysis based on Five-Term Rife-Vincent Windows and Triple-Spectral-Line Interpolation FFT
Zhu Junwei1,2 Li Tianyou 3 Cai Jinding 1 Lin yan 4
1. College of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350002; 2. Technology Center of Grid State Fujian Electric Power Co., Ltd, Fuzhou 350007; 3. Grid State Fujian Electric Power Co., Ltd, Fuzhou 350001; 4. Electric Power Research institute of Grid State Fujian Electric Co., Ltd, Fuzhou 350007
Abstract：Fast Fourier transform (FFT) is the most widely used power harmonic analysis algorithm. However FFT could not get accurate results in the case of non-synchronous sampling and non-integer period truncation. In order to reduce the impact of non-synchronous to FFT, choose the five-term Rife-Vincent (I) windows, which has the great side lobe performance, and interpolation FFT to detect power harmonic signals. Derive a simple and practical correction formula of triple-spectral-line interpolation by using the polynomial fitting algorithm. The simulation results have verified that the algorithm has a better precision and practical value than other common windows and interpolated FFT algorithm in non-synchronous sampling.
朱俊伟 李天友 蔡金锭 林焱. 基于五项莱夫-文森特窗的三谱线插值FFT谐波分析[J]. 电气技术, 2015, 16(03): 34-39.
Zhu Junwei Li Tianyou Cai Jinding1 Lin yan. Harmonic Analysis based on Five-Term Rife-Vincent Windows and Triple-Spectral-Line Interpolation FFT. Electrical Engineering, 2015, 16(03): 34-39.
2015, Vol. 16 
