摘要
电力系统的谐波是影响电能质量的重要因素,文章主要利用小波变换的奇异信号检测能力和较好的时域分辨率,对电网中的谐波进行了检测、分析。通过MATLAB对实例进行仿真,仿真结果表明,利用小波变换可以将信号中不同频率的谐波有效地提取出来,能够精确地分析非平稳信号的谐波,具有很高的分析精度。
The harmonic in power system is an important factor affecting power quality. In this paper, the singular signal detection capability and better time-domain resolution of wavelet transformation are utilized to detect and analyze the harmonic in power grid. It is simulated using MATLAB, and the results show that the harmonics with different frequencies can be effectively extracted from the signal by wavelet transformation, also the harmonic of non-stationary signal can be accurately analyzed with high degree of analyzing accuracy.
出处
《电子技术（上海）》
2012年第5期22-24,共3页
Electronic Technology
关键词
小波变换
电力系统
谐波
wavelet transtorm
power system
harmomc
