| 基于间谐波泄漏估算的谐波间谐波分离检测法 |
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| 引用本文： | 惠锦,杨洪耕.基于间谐波泄漏估算的谐波间谐波分离检测法[J].电工技术学报,2011(1):183-190. |
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| 作者姓名： | 惠锦 杨洪耕 |
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| 作者单位： | 四川大学电气信息学院; |
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| 基金项目： | 国家自然科学基金资助项目(50677041) |
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| 摘 要： | 某次谐波附近存在间谐波时,信号会发生闪变.本文以IEC61000-4-7推荐的测量环境为前提,提出了一种频谱分离法用于检测谐波及引起闪变的主导间谐波.首先研究了同步采样下谐波、间谐波之间的频谱干扰特性;根据间谐波离散频谱泄漏的特点,利用谐波频点左右谱线,通过变量重组,估算其在谐波频点上的泄漏值;用泄漏值修正原始频谱得到...
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| 关 键 词： | 谐波间谐波检测 离散傅里叶变换 快速傅里叶变换 频谱干扰时域平均 |
Harmonics and Interharmonics Separate-Detection Method Based on Estimation of Leakage Values Caused by Interharmonics |
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| Hui Jin Yang Honggeng.Harmonics and Interharmonics Separate-Detection Method Based on Estimation of Leakage Values Caused by Interharmonics[J].Transactions of China Electrotechnical Society,2011(1):183-190. |
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| Authors: | Hui Jin Yang Honggeng |
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| Affiliation: | Hui Jin Yang Honggeng(Sichuan University Chengdu 610065 China) |
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| Abstract: | The interharmonics which are closed to harmonics may bring on signal flicker.Based on the specified signal processing recommendations by IEC61000-4-7,this paper presents a new spectrum separation method for detecting harmonics and the main interharmonics in power system.Firstly,the spectral interference between harmonics and interharmonics under synchronized sampling is investigated.According to the characteristic of discrete spectral leakage,leakage values at harmonic frequencies caused by interharmonics c... |
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| Keywords: | Harmonic and interharmonic detection discrete fourier transform fast fourier transform spectral interruption time-domain averaging |
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