摘要
分析了小波相频特性对小波分析效果的影响 ,说明了开发具有多种多样相频特性的正交紧支复小波的重要性以及这类小波的生成方法 ,同时还提出采用复小波变换的复合信息代替通常采用的简单信息的方案。文中大量的电力系统仿真应用实例表明 ,在许多应用场合 ,按该文方法构造的具有合适相频特性的复小波优于相应的实小波 ,复合信息优于相应的简单信息。
It is shown that complex compactly supported orthonormal wavelets with various phase spectrums are useful in power system. This paper describes how to construct this kind of wavelets from existing real compactly supported orthonormal wavelets, and how to take combined information (CI) instead of simple information (SI) used commonly from a complex wavelet transform. A lot of simulated applications in power system demonstrate that these complex wavelets are more superior to original real ones and so is CI to SI.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2000年第7期83-88,共6页
Proceedings of the CSEE
关键词
正交紧支复小波
小波分析
电力系统
系统故障
complex wavelets
phase spectrum
combined information
wavelet analysis
