摘要
对小波包在暂态电能质量现象分析中的去噪、数据压缩及特征提取几方面进行了阐述 ,并对电压骤降信号进行仿真。其结果表明 ,利用阈值方法 ,小波包的去噪效果要明显优于小波变换 ;利用其对高频再次分解的特性 ,通过对分解系数的处理 。
The application of wavelet package in de noising,data compressing and characteristic extracting for power quality transient analysis is described The simulation results of voltage sag signal indicate that the de noising effect of wavelet package is superior to that of wavelet transform using threshold method The wavelet package transform can decompose high frequency coefficients The data compression and characteristics extraction of transient and non stationary signal can be reached by analyzing the coefficients.
出处
《电工技术杂志》
2004年第4期27-30,34,共5页
Electrotechnical Journal
