| 基于互高阶谱的ESPRIT法的间/次谐波参数估计 |
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| 引用本文： | 田伟,王韵然,曲晶.基于互高阶谱的ESPRIT法的间/次谐波参数估计[J].东北电力学院学报,2007,27(2):68-72. |
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| 作者姓名： | 田伟 王韵然 曲晶 |
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| 作者单位： | 东北电力大学电气工程学院 吉林吉林132012(田伟)，北京交通大学 北京100044(王韵然)，吉林机械工业学校 吉林吉林132012(曲晶) |
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| 摘 要： | 电力系统中,准确有效地确定信号中的间/次谐波分量,对于改善电能质量有重要意义。提出了基于互高阶累积量的子空间旋转法(Esprit)来估计间/次谐波幅值和频率。最大优点是无需谱峰搜索,计算量很小。
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| 关 键 词： | 子空间旋转法 互高阶谱 谐波 噪声 特征向量 |
| 文章编号： | 1005-2992（2007）02-0068-05 |
| 收稿时间： | 2006-12-15 |
| 修稿时间： | 2006-12-15 |
Inter-harmonics and Sub-harmonics Parameter Evaluation on Cross-high-spectrum Based on Esprit Method |
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| TIAN Wei,WANG Yun-ran,QU Jing.Inter-harmonics and Sub-harmonics Parameter Evaluation on Cross-high-spectrum Based on Esprit Method[J].Journal of Northeast China Institute of Electric Power Engineering,2007,27(2):68-72. |
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| Authors: | TIAN Wei WANG Yun-ran QU Jing |
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| Affiliation: | 1. Northeast Dianli Universit,Jilin City, 132012 ;2. Beihua University, Jilin City, 132011 ;3. Beijing Communication University, Beijing, 100044 ;4. Jilin Mechanical Industrial School, Jilin City, 132012 |
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| Abstract: | In electric power system,the harmonics of integer times to fundamental component,the inter-harmonics,and sub-harmonics exist and are in special status.In this paper,cross high order accumulation is able to depress non-correlative noise and correlative gauss noises.ESPRIT method based on cross-high-order cumulate is provided.Simulation results show that this method is effective and accurate to evaluate sinusoid signal frequencies from hybrid colored noises and good performance. |
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| Keywords: | Cross-high-order-accumulation Inter-harmonics and Sub-harmonics Colored Hybrid Noise Characteristic Decomposition Cross-high-order-spectrum |
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