New Spectrum Leakage Correction Algorithm for Frequency Estimation of Power System Signals
New Spectrum Leakage Correction Algorithm for Frequency Estimation of Power System Signals
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DOI：
10.1109/tim.2009.2014506
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发表时间：
2009-05-01
影响因子：
5.6
通讯作者：
Serra, A. Cruz
中科院分区：
文献类型：
--
作者：
Radil, Tomas;Ramos, Pedro M.;Serra, A. Cruz
本文介绍了一种用于估计单音信号频率的新算法。该算法在频域中起作用，并基于最佳拟合单色调信号的理论谱，该频谱使用采样信号范围上的矩形窗口窗口窗口。使用此迭代过程，该算法补偿了不连贯采样和有限数量的样品引起的光谱泄漏。由于泄漏补偿，该算法提供了信号频率，振幅和相位的准确估计。研究了噪声，谐波和谐波扭曲对所提出算法的影响，并在此报告。将算法的性能与其他几种频率估计算法进行了比较（主要是在频域中工作的算法）。由于该算法旨在用于电源质量测量（尽管它不限于此应用），因此它也对单相功率系统测量的信号进行了测试。
A new algorithm for the estimation of the frequency of single-tone signals is presented in this paper. The algorithm works in the frequency domain and is based on best fitting a theoretical spectrum of a single-tone signal that is windowed using a rectangular window on the spectrum of the sampled signal. Using this iterative process, the algorithm compensates the spectrum leakage caused by incoherent sampling and a finite number of samples. Due to leakage compensation, the algorithm provides accurate estimates of the signal's frequency, amplitude, and phase. The influence of noise and harmonic and interharmonic distortions on the proposed algorithm was investigated and is reported here. The algorithm's performance was compared with several other frequency-estimation algorithms (mostly those working in the frequency domain). Since the algorithm is intended for power quality measurements (although it is not limited to this application), it was also tested on signals measured in a single-phase power system.