【摘要】 介绍了小波分析的基本原理、自适应的时频窗和它的快速算法。用仿真试验说明了小波变换在信号奇异性检测和信号消噪过程中的应用,将Fourier变换结果和小波变换结果作比较,得出小波变换有着Fourier变换无可比拟的优越性。并结合这两个应用,对电力系统中的故障检测进行了模拟仿真,仿真结果表明小波变换能够很好地消除电力系统故障信号噪声,并检测出故障点。更多还原

【Abstract】 The basic principle of wavelet analysis and its fast algorithm are introduced.The simulation results show its application to signal singularity test and noise reduction.The comparisons between wavelet transform and Fourier transform have also been done to prove that the wavelet algorithm can successfully reduce the noise of fault signal and locate the fault point.更多还原