| 一种高精度的改进傅里叶测频算法 |
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| 引用本文： | 磨少清,李啸骢.一种高精度的改进傅里叶测频算法[J].电力系统自动化,2003,27(12):48-49,54. |
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| 作者姓名： | 磨少清 李啸骢 |
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| 作者单位： | 1. 广西民族学院物电系,广西壮族自治区南宁市,530006
2. 广西大学电气工程学院,广西壮族自治区南宁市,530004 |
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| 摘 要： | 通过严谨的理论推导，揭示了传统傅里叶测频算法存在的误差，并由此提出了一种能有效消除这种误差的改进测频算法。数字仿真和实际应用表明，该算法的计算精度高，而且能实现宽范围的测频，可以满足电力系统控制装置和安全装置对频率测量的要求。
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| 关 键 词： | 频率测量 电力系统 傅里叶变换 相角差 |
| 收稿时间： | 1/1/1900 12:00:00 AM |
| 修稿时间： | 1/1/1900 12:00:00 AM |
AN IMPROVED HIGH-ACCURACY ALGORITHM FOR FREQUENCY MEASUREMENT BASED ON FOURIER TRANSFORM |
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| Mo Shaoqing ,Li Xiaocong.AN IMPROVED HIGH-ACCURACY ALGORITHM FOR FREQUENCY MEASUREMENT BASED ON FOURIER TRANSFORM[J].Automation of Electric Power Systems,2003,27(12):48-49,54. |
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| Authors: | Mo Shaoqing Li Xiaocong |
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| Affiliation: | Mo Shaoqing 1,Li Xiaocong 2 |
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| Abstract: | Based on theoretic derivation, this paper reveals the causes of error existing in the traditional Fourier frequency-tracking algorithm. Furthermore, an improved algorithm, which can eliminate the error, is proposed in the paper. Digital simulation and field applications show that this algorithm improves the output-data accuracy, can track the variations of the frequency in a wide range and has met the requirement of frequency measurement for power system automation devices. |
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| Keywords: | frequency measurement power systems Fourier transform phase-angle difference |
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