| 能滤除衰减直流分量的全波傅氏算法研究 |
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| 引用本文： | 黄春.能滤除衰减直流分量的全波傅氏算法研究[J].江苏电器,2010(4). |
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| 作者姓名： | 黄春 |
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| 作者单位： | 阿城继电器股份有限公司; |
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| 摘 要： | 全波傅氏算法是在周期信号基础上推导出来的,当采样信号中含有衰减直流分量时,就会产生误差。提出一种改进算法,通过两次全波傅氏变换,就能在未知衰减时间常数的情况下对衰减直流分量进行补偿。该算法简单,数据窗短,精度高,能满足实时性要求,具有较高的工程实用价值。
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| 关 键 词： | 衰减直流分量 全波傅氏算法 微机保护 |
Study of Filtering Decaying DC Component for Full-Wave Fourier Algorithm |
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| Authors: | HUANG-Chun |
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| Affiliation: | Acheng Relay Shares Co./a>;Ltd/a>;Harbin 150302/a>;China |
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| Abstract: | Full-wave Fourier algorithm is pushed out on the basis of cycle signals,when sampling signals contain decaying DC component,error will take place.An improved algorithm was proposed,with two times full-wave Fourier changes,compensation would be carried out to decaying DC component in the situation without knowing decaying time constant.The algorithm is simple,short in data window,high in accuracy,meeting requirements of real time,with higher engineering practical value. |
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| Keywords: | decaying DC component full-wave Fourier algorithm microprocessor-based protection |
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