摘要
文章利用小波分析可进行时域与频域同时局部分析,频域窗口随信号的变化自动调整的特点。将小波分析应用于电力设备绝缘在线监测这类具有较大背景干扰情况下的信号处理,选择合适的小波基对混有噪声的信号进行变换,以实现信号与噪声的分离。并利用小波变换的快速算法对信噪分离作了仿真计算,讨论了小波分析在线监测等领域的应用前景。
The wavelet analysis is widely applied in various aspects of engineering due to its good performance in the analysis of time and frequency domain.Considering the feature that the wavelet analysis can be used to perform simultaneously partial analysis in time and frequency domain,this paper analyses the signal mixed with noise and separates the signal and noise.It is beneficial to the signal disposal of power systems on-line monitoring insulation which have great disturbance background.The emulating calculation for separation of the signal and noise is carried out,and the possible applications of wavelet analysis in several areas of on -line monitoring are discussed.
出处
《四川工业学院学报》
2004年第2期13-15,共3页
Journal of Sichuan University of Science and Technology
关键词
电力设备
小波分析
在线监测
信号处理
噪声
power device
wavelet analysis,on -line monitoring
signal disposal
noise
