CAJ | 학술논문

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。
채용쾌속부리협변환（ FFT）진행전력계통해파분석시흔난주도동보채양，고조성빈보설루，이요득도준학적빈보분석결과취필수대경FFT변환득도적빈보진행교정。상세분석료상용적상위차교정법적궤충실현방법，병통과방진비교료타문적우렬성。
There have difficulties in synchronized sampling during the harmonic analysis of power system using fast Fourier 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 .