| 基于加窗插值FFT的电力谐波检测算法研究 |
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| 引用本文： | 于海雁,陈泽旭.基于加窗插值FFT的电力谐波检测算法研究[J].沈阳大学学报,2011,23(6):108-110,114. |
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| 作者姓名： | 于海雁 陈泽旭 |
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| 作者单位： | 沈阳工业大学信息科学与工程学院,辽宁沈阳,110870 |
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| 摘 要： | 通过分析比较常用的谐波检测方法,根据电力谐波信号的特点,提出了布莱克曼窗与双峰插值相结合的算法,并推导出频率和幅值的修正计算公式,从而进一步降低了泄漏和噪声干扰,提高了计算频率和幅值的准确度.仿真结果验证了算法的正确性与有效性.
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| 关 键 词： | 电力系统 谐波检测 快速傅里叶变换(FFT) 窗函数 双峰插值 |
FFT Algorithm Based on Window Function and Interpolation for Electric Harmonic Measurement |
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| YU Haiyan,CHEN Zexu.FFT Algorithm Based on Window Function and Interpolation for Electric Harmonic Measurement[J].Journal of Shenyang University,2011,23(6):108-110,114. |
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| Authors: | YU Haiyan CHEN Zexu |
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| Institution: | YU Haiyan1,CHEN Zexu1,2(1.School of Information Science and Engineering,Shenyang University of Technology,Shenyang 110870,China,2.74 Units,93279 Troops,Dandong 118000,China) |
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| Abstract: | Through the analysis and comparison of harmonic measurement methods in common use,according to the characteristics of electric harmonic signal,the combination of Blackman window function and the algorithm of double peak of spectral lines interpolation are carried out.Based on this algorithm,the modified formula of frequency and amplitude are obtained by using the polynomial approximation method,which can further reduce leakage and noise interference,and improve the calculation accuracy of the frequency and amplitude.The results of MATLAB simulation have verified the exactness and effectiveness of the algorithm. |
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| Keywords: | power system harmonic measurement fast fourier transform（FFT） window function double peak of spectral lines interpolation |
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