Research On Algorithm For Fault Signal Singularity Points Based On Wavelet Analysis

Equipment fault diagnosis is the difficulty of engineering applications, has not been well addressed, as fault signal by the external environment, the impact of a larger operation mode, making it difficult fault signal acquisition and processing.To solve these problems, there is proposed based on wavelet transform modulus maxima detection method, which make up the short in Fourier transform without time resolution and can not accurately identify of a weak fault signal. Finally, the wavelet transform modulus maxima detection method applied to the in small current grounding system of single-phase earth fault line selection, this method proved the feasibility and correctness in fault signal singular points extraction and recognition.