摘  要：分析了小波变换和小波消噪的基本原理，并将二者应用于故障信号的消噪和检测中，最终实现对转子绕组匝间短路故障的检测和定位。结果表明，小波消噪适用于转子绕组匝间短路故障的在线检测，且消噪效果明显。
关键词：汽轮发电机；小波变换；故障诊断

Abstract:In this paper,the theory of wavelet transform and denoising were analyzed.It was applied to denoise and inspect fault signal,thereby realized the detection of interturn short circuit fault and founel the fault position.The results of simulation show that wavelet denoising is suitable for on-line fault detection of interturn short circuit and the effect is obvious.
Key Words:Turbine generator;Wavelet transform;Fault diagnoses