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Research on Algorithm for Fault Signal Singularity Points Based on Wavelet Analysis

Author: JiaLiLi
Tutor: YangYaoQuan
School: North China Electric Power University (Hebei)
Course: Systems Engineering
Keywords: Fault Diagnosis Wavelet Transform Small current grounding system
CLC: TM862
Type: Master's thesis
Year: 2009
Downloads: 130
Quote: 0
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Abstract


Equipment fault diagnosis is the focus and difficulty of engineering applications , has not been a good solution , because the fault signal by factors of the external environment , equipment operation mode , is difficult to obtain and process . To solve these problems , this paper proposes a detection method based on wavelet transform modulus maxima method to compensate for the time resolution Fourier transform weak fault feature signal and not be able to accurately identify the shortcomings . Finally , the wavelet transform modulus maxima detection method applied to the small current grounding system single-phase ground fault line selection checks to verify the feasibility of this method in the extraction and recognition of fault signal singular point and correct sex .

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CLC: > Industrial Technology > Electrotechnical > High Voltage Engineering > Overvoltage and Its Protection > Over-voltage protection devices
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