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基于Rife-Vincent窗的高准确度电力谐波相量计算方法

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Keywords: 谐波相量,Rife-Vincent窗,非同步采样,快速傅里叶变换

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Abstract:

非同步采样时,快速傅里叶变换应用于谐波分析容易造成频谱泄露和栅栏效应,影响谐波相量计算的准确度。分析Rife-Vincent窗的旁瓣特性,提出一种基于5项Rife-Vincent(I)窗双谱线插值FFT的谐波相量计算方法。与传统窗函数相比,5项Rife-Vincent(I)窗具有更好的频谱泄漏抑制特性,而双谱线插值算法能够对栅栏效应进行有效修正。仿真实验结果表明,在非同步采样条件下,提出的方法适合于非线性电路谐波相量分析,22次复杂谐波电流信号的频率计算相对误差仅为5.7×10-11%,幅值计算相对误差≤5.3×10-7%,初相位计算相对误差≤3.1×10-6%。

References

[1]  Ferrero A, Ottoboni R. High-accuracy Fourier analysis based on synchronous sampling techniques[J]. IEEE Transactions on Instrumentation and Measurement, 1992, 41(6): 780-786.
[2]  Hidalgo R M, Fernandez J G, Rivera R R, et al. A simple adjustable window algorithm to improve FFT measurements[J]. IEEE Transactions on Instrumentation and Measurement, 2002, 51(1): 31-36.
[3]  潘文, 钱俞寿, 周鹗. 基于加窗插值FFT的电力谐波测量理论(I) 窗函数研究[J]. 电工技术学报, 1994, 9(1): 50-54.
[4]  Li Y F, Chen K F. Eliminating the picket fence effect of the fast Fourier transform[J]. Computer Physics Communications, 2008, 178(7): 486-491.
[5]  赵文春, 马伟明, 胡安. 电机测试中谐波分析的高精度FFT算法[J]. 中国电机工程学报, 2001, 21(12): 83-87.
[6]  Rife D C, Vincent G A. Use of the discrete Fourier transform in the measurement of frequencies and levels of tones[J]. The Bell System Technical Journal, 1970, 49(2): 197-228.
[7]  Ortmeyer T H, Chakravarthi K R, Mahmoud A A. The effects of power system harmonics on power system equipment and loads[J]. IEEE Transactions on Power Apparatus and Systems, 1985, 104(9): 2555-2563.
[8]  Testa A, Akram M F, Burch R, et al. Interharmonics: theory and modeling[J]. IEEE Transactions on Power Delivery, 2007, 22(4): 2335-2348.
[9]  潘文, 钱俞寿, 周鹗. 基于加窗插值FFT的电力谐波测量理论(II)——双插值FFT理论[J]. 电工技术学报, 1994, 9(2): 53-56.
[10]  Reljin I, Reljin B, Papić V. Extremely flat-top windows for harmonic analysis[J]. IEEE Transactions on Instrumentation and Measurement, 2007, 56(3): 1025-1041.
[11]  张介秋, 梁昌洪, 陈硕圃. 基于卷积窗的电力系统谐波理论分析与算法[J]. 中国电机工程学报, 2004, 24(11): 48-52.
[12]  庞浩, 李东霞, 俎云霄, 等. 应用FFT进行电力系统谐波分析的改进算法[J]. 中国电机工程学报, 2003, 23(6): 50-54.
[13]  许珉, 张鸿博. 基于Blackman-harris窗的加窗FFT插值修正算法[J]. 郑州大学学报(工学版), 2005, 26(4): 99-101.
[14]  Dušan Agre. Interpolation in the frequency domain to improve phase measurement[J]. Measurement, 2008, 41(2): 230-235.
[15]  Hart D, Novosel D, Hu Y, et al. A new frequency tracking and phasor estimation algorithm for generator protection[J]. IEEE Transactions on Power Delivery, 1997, 12(3): 1064-1073.
[16]  Benmouyal G. An adaptive sampling-interval generator for digital relaying[J]. IEEE Transactions on Power Delivery, 1989, 4(3): 1602-1609.

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