Frequency Estimation: A Least-Squares New Approach
Frequency Estimation: A Least-Squares New Approach
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DOI：
10.1109/tpwrd.2010.2090177
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发表时间：
2011-04
影响因子：
4.4
通讯作者：
A. Abdollahi;F. Matinfar
中科院分区：
文献类型：
--
作者：
A. Abdollahi;F. Matinfar
提出了一种基于最小二乘法的电力系统频率在线估计新算法。该算法基于一个公式，该公式适用于每三个连续的样本。这些公式中的几个被写入一些连续的三倍样本和最小二乘法被应用于估计频率。提出了一种在估计精度下降不大的情况下，计算量较小的改进方法。讨论了算法的响应时间和处理时间。的数据窗口大小，采样频率，噪声，谐波，间谐波，指数衰减直流，和滤波的性能上的方法进行了讨论。该方法进行了比较，最近的类似论文和解调方法。
A new algorithm based on the least-squares method is proposed for online power system frequency estimation. The algorithm is based on a formula which holds for every three consecutive samples. Several of these formulae are written for some consecutive triples of samples and the least-squares method is applied to estimate the frequency. A revised version of the approach with less computation burden at the cost of little decline in estimation accuracy is presented. Response time and processing time of the algorithm are discussed. The effect of data window size, sampling frequency, noise, harmonic, interharmonic, exponentially decaying dc, and filtering on the performance of the approach is discussed. The approach is compared with that of a recent similar paper and a demodulation approach.