| 引用本文: | 赵闻蕾,孔 莉,王娟娟,甄 霞.基于MATLAB和小波变换的电力机车谐波电流分析[J].电力自动化设备,2012,32(1): |
| ZHAO Wenlei,KONG Li,WANG Juanjuan,ZHEN Xia.Harmonic analysis based on MATLAB and wavelet transform for electrical locomotive[J].Electric Power Automation Equipment,2012,32(1): |
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| 摘要: |
| 介绍了基于小波变换的谐波检测方法，应用小波变换良好的时频局部化特性对电力机车牵引负荷进行谐波检测。以SS4G型电力机车为研究对象，利用最小描述长度准则确定了分析谐波的最佳小波函数，在MATLAB环境下进行小波算法编程。仿真结果表明：小波变换能快速准确地将信号中的基波和不同频率的谐波信号分解出来，实现谐波检测。 |
| 关键词: 小波变换 谐波检测 电力机车 最小描述长度准则 MATLAB |
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| 基金项目:辽宁省大连市信息产业局资助项目（2011J21DW007）；大连市经委科技基金资助项目（X79746） |
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| Harmonic analysis based on MATLAB and wavelet transform for electrical locomotive |
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ZHAO Wenlei1,2, KONG Li1, WANG Juanjuan1, ZHEN Xia1
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1.Dalian Jiaotong University，Dalian 116028，China;2.Dalian University of Technology，Dalian 116024，China
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| Abstract: |
| The harmonic detection based on wavelet transform is introduced and the better performance of its time-frequency localization is applied to detect the harmonics of electrical locomotive traction load. The MDL（Minimum Description Length） principle is used to determine the best wavelet function for SS4G-type electrical locomotive and the wavelet algorithm is programmed based on MATLAB. Simulative results demonstrate that wavelet transform detects the fundamental and different harmonics of signal accurately and quickly. |
| Key words: wavelet transform harmonic detection electrical locomotive MDL principle MATLAB |
