基于小波变换的电网谐波电流检测研究  

Research of harmonic current detecting based on wavelet transform

作　　者：郭京蕾[1] 

机构地区：[1]华中师范大学计算机科学系,湖北武汉430079

出　　处：《计算机工程与设计》2009年第3期732-734,共3页Computer Engineering and Design

摘　　要：电网谐波电流检测是电力系统质量分析和谐波补偿的关键技术,对小波变换在电网中的谐波电流检测原理进行了研究。根据小波变换的多分辨率分析,采用Mallat算法对电网谐波电流检测进行实现,将电网电流中的基波电流和谐波电流分离,并对小波变换谐波检测小波基的选取原则进行了分析,在基于TMS320F2812DSP的实验装置上进行了小波变换谐波检测实验。实验结果表明,该方法具有较高的检测精度。Harmonic current detecting in power system is the key technology of power system quality and harmonic compensation. A method for harmonic current detecting in power system based on wavelet transform is proposed. Based on multi-resolution analysis and Mallat algorithm, the fundamental current is separated from the total harmonic current in power system. And the wavelet basis of harmonic detecting based on wavelet transform is analyzed. The method is realized on experimental platform based on TMS320F2812 and the result shows that this method has high precision.

关 键 词：小波变换 多分辨率分析 MALLAT算法 电网谐波 谐波检测 

分 类 号：TM935.21[电气工程—电力电子与电力传动]