Harmonic resonances exist inherently in power systems with varying affected areas and amplification levels. This paper presents a quantitative harmonic resonance assessment technique with sensitivity analysis under uncertainty to reveal the affected areas of a harmonic resonance and corresponding amplification severities at different buses. Resonance amplification conditions at the harmonic source bus (localized resonance) and non-harmonic-source bus (non-localized resonance) are distinguished, respectively, and then a novel index to quantify the harmonic propagation areas and corresponding amplification severities are established based on harmonic electrical distances. Apart from local sensitivity analysis (SA), a global SA method is further used to perform the SA of system uncertain parameters, and three types of sensitivity parameters are distinguished and defined. In addition, comparative analysis of the proposed method with existing harmonic resonance analysis methods shows that the proposed method can not only provide more information for harmonic resonance analysis and control but is also easy and practical.

中文翻译：

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不确定性下电力系统谐波谐振放大的定量严重性评估和灵敏度分析

谐波共振固有地存在于具有不同影响区域和放大水平的电力系统中。本文提出了一种在不确定性下具有灵敏度分析的定量谐波谐振评估技术，以揭示不同母线谐波谐振的影响区域和相应的放大严重程度。分别区分了谐波源母线（局部谐振）和非谐波源母线（非局部谐振）的谐振放大条件，然后基于谐波建立了量化谐波传播区域和相应放大严重程度的新指标。电气距离。除了局部敏感性分析（SA）之外，还使用全局SA方法来执行系统不确定参数的SA，区分并定义了三种类型的灵敏度参数。此外，通过与现有谐波谐振分析方法的对比分析表明，该方法不仅可以为谐波谐振分析和控制提供更多信息，而且简单实用。