【摘要】 快速傅里叶变换用于电力系统谐波分析中存在较大的误差,尤其是相位误差。对快速傅里叶变换这一算法产生频率泄漏的原因进行了探讨,指出频率泄漏产生的根本原因,并对国内外提出的抑制频率泄漏的方法进行分析,详细介绍了这些方法的利弊。更多还原

【Abstract】 The FFT has a higher error in the harmonic analysis of the electric power system,especially for the phases.The rea- son of the leakage of the FFT in-depth is discussed,the reason of the leakage of the FFT is pointed,the means which were bring forward to control the leakage of the frequency are ana- lyzed,especially the benefit and fraud of those methods is rec- ommend.更多还原