| 基于DSP和LabVIEW的电参数检测系统 |
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| 引用本文： | 李国尧,马吉恩,方攸同. 基于DSP和LabVIEW的电参数检测系统[J]. 电测与仪表, 2011, 48(9): 1-4 |
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| 作者姓名： | 李国尧 马吉恩 方攸同 |
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| 作者单位： | 浙江大学电气工程学院,杭州,310027 |
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| 基金项目： | 国家863计划资助项目(2009AA110301);铁道部科技研究开发计划资助项目(2009J006-L);中国博士后科学基金资助项目(20090461353) |
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| 摘 要： | 为解决大量非线性负荷和冲击性电力设备投入引起的电能质量问题,设计了一套基于DSP和LabVIEW的电参数检测系统,提出了将FFT(Fast Fourier Transform)和WT( Wavelet Transform)相结合的稳暂态检测新算法.该算法先通过小波变换消噪,然后找到小波变换高频系数的极大值点,继而确定暂...
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| 关 键 词： | DSP MALLAT算法 快速傅里叶算法(FFT) 小波分解与重构 数据处理 谐波 LABVIEW |
An Electrical Parameter Measurement System Based on DSP and LabVIEW |
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| LI Guo-yao,MA Ji-en,FANG You-tong. An Electrical Parameter Measurement System Based on DSP and LabVIEW[J]. Electrical Measurement & Instrumentation, 2011, 48(9): 1-4 |
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| Authors: | LI Guo-yao MA Ji-en FANG You-tong |
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| Affiliation: | (College of Electrical Engineering,Zhejiang University,Hangzhou 310027,China) |
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| Abstract: | To address power quality problems caused by a large number of non-linear load and the electrical equipment,this paper designs an electrical parameter measurement system based on DSP and LabVIEW.It puts forward a FFT(Fast Fourier Transform) and WT(Wavelet Transform) new detecting algorithm.This algorithm at first denoises by using wavelet transform,then finds out the maxima of the high-frequency coefficients of wavelet transform,and then calculates the duration and amplitude of the transient signal.Then it expands the transient signals time interval with the normal signal cycle.At last it makes the whole time FFT analysis,getting the harmonic amplitude,phase and frequency results.Tests show that the detection is of accuracy and feasibility. |
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| Keywords: | DSP MALLAT algorithm fast Fourier transform wavelet decomposition and reconstruction data processing harmonic LabVIEW |
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