Quasi-synchronous sampling algorithm for frequency measurement based on multiple segment trapezoidal rule

被引：0

作者：

Meng, Zhuo ^{[1
]}

Wen, He ^{[1
]}

机构：

[1] College of Electrical and Information Engineering, Hunan University, Changsha, 410082, Hunan Province

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2015年 / 35卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Frequency measurement; Iteration; Noise; Numerical integration; Quasi-synchronous sampling algorithm;

D O I：

10.13334/j.0258-8013.pcsee.2015.10.010

中图分类号：

学科分类号：

摘要：

Fluctuations of power system frequency make it difficult to implement the synchronous sampling strictly. In the case of asynchronous sampling, deviation of frequency measurement is inevitable, which limits the accuracy of measurement of the power system frequency and the other parameters. Therefore, this paper studied the quasi-synchronous sampling algorithm based on numerical integration, deduced the quasi-synchronous sampling algorithm based on multiple segment Trapezoidal rule and established the calculation flow of power system frequency measurement. Some simulations were conducted to analyze the accuracy of frequency measurement and the ability of anti-noise of the quasi-synchronous sampling algorithm based on multiple segment Trapezoidal rule, the interpolation fast Fourier transform (FFT) algorithm based on four-item and third-order of Nuttall window and Hanning window. Simulation results show that, compared with the interpolation FFT algorithm, the proposed method in this paper can not only improve accuracy of frequency measurement effectively, but also inhibit the influence of white noises effectively. Frequency measurement experiment has confirmed the effectiveness and accuracy of the proposed method in this paper by using standard power source. ©2015 Chin. Soc. for Elec. Eng.

引用

页码：2445 / 2453

页数：8

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