本文介绍了电网中谐波成分的起因以及对电网运行的危害，讨论了频率分析中常用的离散傅里叶变换和快速傅里叶变换的应用特点，最后利用ADI 公司的ADuC841 微控制器芯片实现了电网中谐波成分的测量。数据显示所提出的方法具有足够的测量精度以及测量速度，并且所设计的系统具有使用方便、成本低等优点。关键词：正弦波；非正弦波；基波；谐波；微控制器Abstract：This paper introduces the network harmonic components, as well as the causes of the power grid operation against discussed frequency analysis used in the discrete Fourier transform and Fast Fourier Transform application characteristics, the final use of ADI's micro-controller chip ADuC841 Harmonic components of the network measurements. Data show that the proposed method with sufficient accuracy and measurement speed, and the system designed with ease of use, and low cost advantages.Keywords：sine wave; non-sine wave; fundamental wave; harmonic; MCU
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