频谱细化在电力谐波分析仪中的应用

摘要

论文提出一种基于二段式FFT频谱细化算法,利用了存贮空间中保存的前一次计算的数据,增加了实际计算的数据长度,在运算时间增加不多的情况下,提高了FFT的频率分辨率.并利用谐波分析仪上DSP芯片强大的数字信号处理能力对数据进行分析和处理.该算法作为谐波分析方法用于谐波分析仪中,能提高了谐波分析仪的精确度和快速性.%This paper presents a spectrum zoom based on two-section FFT algorithm,uses the storage space which stored the data of the previous calculation,increases the actual calculation of the length of the data,but the computation time increasing no much,improves FFT frequency resolution.Using the powerful digital signal processing capability of the DSP chip on the harmonic analyzer for data analysis and processing.The algorithm as harmonic analysis method is applied to harmonic analyzer,could improve the accuracy and rapidity of the harmonic analyzer.