| 电网动态频率测量的移频迭代滤波方法及应用研究 |
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| 引用本文： | 罗丹,温和,唐璐.电网动态频率测量的移频迭代滤波方法及应用研究[J].电力自动化设备,2019,39(5). |
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| 作者姓名： | 罗丹 温和 唐璐 |
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| 作者单位： | 湖南大学电气与信息工程学院 |
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| 基金项目： | 国家自然科学基金资助项目(61771190)；湖南省科技重大专项研究项目(2017GK1051)；湖南省自然科学基金杰出青年基金资助项目(2019JJ20001) |
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| 摘 要： | 提出了一种电网动态频率测量的移频迭代滤波新方法,该方法首先采用时域移频将信号负频率成分移到零频附近,然后采用迭代滤波方法滤除高频分量和噪声,最后运用相位差实现频率估计。所提方法具有抗噪性好、运算量小的特点,仿真和实验结果验证了所提算法的有效性。
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| 关 键 词： | 电网频率测量 移频 迭代 滤波 数字信号处理 |
Research on frequency-shifting iterative filtering method for dynamic frequency measurement of power system and its application |
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| LUO Dan,WEN He and TANG Lu.Research on frequency-shifting iterative filtering method for dynamic frequency measurement of power system and its application[J].Electric Power Automation Equipment,2019,39(5). |
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| Authors: | LUO Dan WEN He and TANG Lu |
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| Affiliation: | College of Electrical and Information Engineering, Hunan University, Changsha 410082, China,College of Electrical and Information Engineering, Hunan University, Changsha 410082, China and College of Electrical and Information Engineering, Hunan University, Changsha 410082, China |
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| Abstract: | A new method of frequency-shifting iterative filtering for dynamic frequency measurement of power grid is proposed. The frequency shift in time-domain is used to move the negative frequency components to zero-frequency, then the high-frequency components and noise are filtered by iterative filtering method, and phase difference is used to realize frequency estimation. The proposed method has the advantages of good anti-noise characteristic and low computational complexity. The simulative and experimental results verify the effectiveness of the proposed algorithm. |
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| Keywords: | frequency measurement of power system frequency shift iteration filtering digital signal processing |
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