摘要
采用快速傅里叶变换(FFT)进行电力系统谐波分析时很难做到同步采样,故造成频谱泄漏,而要得到准确的频谱分析结果就必须对经FFT变换得到的频谱进行校正。详细分析了常用的相位差校正法的几种实现方法,并通过仿真比较了它们的优劣性。
There have difficulties in synchronized sampling during the harmonic analysis ot power system using last l, ouner transform （FFT） algorithm, which results in frequency spectrum leakage. So it needs the accurate spectrum value by correc- ting the frequency spectrum obtained by FFT. Three conventional phase difference calibration methods are analyzed in detail, and their advantages and disadvantages are compared by the simulation.
出处
《四川电力技术》
2013年第6期43-45,共3页
Sichuan Electric Power Technology
关键词
谐波分析
相位差校正法
汉宁窗
harmonic analysis
phase difference calibration
Hanning window
