| 基波电流快速无时滞检测方法在电力系统中的应用 |
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| 引用本文： | 张玉花.基波电流快速无时滞检测方法在电力系统中的应用[J].平顶山工学院学报,2005,14(2):35-37. |
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| 作者姓名： | 张玉花 |
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| 作者单位： | 平顶山工学院,河南,平顶山,467001;武汉大学,湖北,武汉,460002 |
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| 摘 要： | 文章提出了一种基于有限长余弦型单位脉冲响应滤波器的实时基波电流检测方法。其带通滤波器在基频处的幅值无衰减、相位无延时，能将2次以上的谐波全部滤掉，从而得到基波分量。分析了滤波器的幅频特性和相位特性；推导了迭代实现公式，大大地节约了计算量。此滤波器设计的数字基波检测方法可用于任何一种电力系统的谐波补偿和微机继电保护系统中。
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| 关 键 词： | 基波 实时检测 余弦 FIR滤波器 |
| 文章编号： | 1671-9662(2005)02-0035-03 |
| 修稿时间： | 2004年11月10 |
Application of instantaneous first-harmonic current detecting method based on cosine FIR filter |
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| ZHANG Yu-hua.Application of instantaneous first-harmonic current detecting method based on cosine FIR filter[J].Journal of Pingdingshan Institute of Technology,2005,14(2):35-37. |
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| Authors: | ZHANG Yu-hua |
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| Abstract: | In this paper, a instantaneous first-harmonic current detecting method based on cosine FIR filter is introduced .The amplitude of this filter is 1 in first-harmonic frequency, the amplitude in other harmonic is 0, the phase in first-harmonic frequency is 0,then we can get first-harmonic branche.The amplitude frequency characteristic and phase frequency of the filter is analyzed. The recursive algorithm for the filter implementation is developed,and the number of addition and multiplication is more less than the direct algorithm.The digital first-harmonic detecting method based on this kind of filter can be used in anyone power harmonic compensation system and microcomputer relay protection system. |
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| Keywords: | first-harmonic instantaneous detection cosine FIR filter |
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