Abstract This paper provides an in-depth analysis of the methodologies proposed by the IEC 61000-4-7 and IEC 61000-4-30 standards for the supraharmonic frequency range. The paper presents the stat-of-the-art concerning supraharmonics and describes the existing standardized measurements for supraharmonics. The different ways of performing the measurements proposed by such standards are compared. The main contribution and novelty of the paper are the comparative analysis of the standardized measurement methods which considers both efficiency and computational complexity of them. Analyzes considering real signals, a real time signal, a time-varying synthetic signal and the influence of the noise level for the methodologies proposed by the IEC 61000-4-7 and IEC 61000-4-30 standards were performed. Finally, alternative ways of measuring supraharmonics are suggested. One may conclude that the method described in IEC 61000-4-30 showed to be less immune to noise and less complex (in terms of mathematical operations required during processing) than that described in the IEC 61000-4-7, but loses accuracy in estimating high-amplitude supraharmonic components.

中文翻译：

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超谐波量程测量方法对比分析

摘要 本文深入分析了 IEC 61000-4-7 和 IEC 61000-4-30 标准针对超谐波频率范围提出的方法。本文介绍了有关超谐波的最新技术，并描述了现有的超谐波标准化测量。比较了由这些标准提出的执行测量的不同方法。本文的主要贡献和新颖之处在于对标准化测量方法的比较分析，同时考虑了它们的效率和计算复杂性。针对 IEC 61000-4-7 和 IEC 61000-4-30 标准提出的方法，进行了考虑真实信号、实时信号、时变合成信号和噪声水平影响的分析。最后，提出了测量超谐波的替代方法。人们可能会得出结论，IEC 61000-4-30 中描述的方法与 IEC 61000-4-7 中描述的方法相比，对噪声的免疫力较低，复杂度较低（就处理过程中所需的数学运算而言），但在估计高振幅超谐波分量。