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Received:September 24, 2014
Received:September 24, 2014
中文摘要: 提出了一种能滤除衰减直流分量影响的改进傅里叶算法.该算法利用正弦函数相隔半个周期的采样数据相加为零的原理,得到一个关于衰减直流分量的数学表达式,进而计算衰减直流分量的数值.仿真结果显示,该算法具有较好的精确性,其输出结果能够准确反应短路电流中的工频值.
Abstract:An algorithm which can eliminate the effect of decaying direct current (DC) component on DFT based phasor estimation is proposed. The proposed technique is based on the elimination of the phasor of a sinusoidal wave corrupted by a DC component. The results of simulation show the proposed algorithm has a great accuracy in fundamental frequency component extraction.
keywords: Fourier transform fundamental component extracting microprocessor-based protection decaying DC component
文章编号：20150604 中图分类号： 文献标志码：
基金项目:上海绿色能源并网工程技术研究中心资助项目(13DZ2251900).
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