| 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): |
| LUO Dan,WEN He,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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| 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。 |
| 关键词: 电网频率测量 移频 迭代 滤波 数字信号处理 |
| DOI：10.16081/j.issn.1006-6047.2019.05.022 |
| 分类号:TM761 |
| 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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| 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, TANG Lu
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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. |
| Key words: frequency measurement of power system frequency shift iteration filtering digital signal processing |
