摘要
间谐波作为1种特殊的谐波,大量存在于电力系统中,对电能质量造成严重的污染。传统的快速傅里叶变换(FFT)对间谐波的分析有很大的局限性,离散小波变换(DWT)具有良好的时频局域化特性,通过理论分析和试验仿真表明,采用小波变换方法能有效地检测出信号中所含的间谐波成分。
Inter-harmonic is a kind of special harmonics,it exists in the power system,causes the serious pollution to the power quality,so the effective detection and analysis is very important.The traditional fast Fourier transform（FFT） used in the analysis of inter-harmonic is of great limitations,while discrete wavelet transform（DWT） has good characteristics of time-frequency and multi-resolutions. The results show that using the wavelet transform can effectively detect the inter-harmonics from the signals by theoretical analysis and test simulation.
出处
《陕西电力》
2010年第11期28-31,共4页
Shanxi Electric Power
