Method and system for extracting GIS partial discharge signal
The invention discloses a method for extracting a GIS partial discharge signal. The method comprises the following steps: (1) collecting a GIS partial discharge signal containing noise; (2) performing fractional order Fourier transform on the GIS partial discharge signal containing the noise, and pr...
Gespeichert in:
| Hauptverfasser: | , , , , , , |
|---|---|
| Format: | Patent |
| Sprache: | chi ; eng |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | The invention discloses a method for extracting a GIS partial discharge signal. The method comprises the following steps: (1) collecting a GIS partial discharge signal containing noise; (2) performing fractional order Fourier transform on the GIS partial discharge signal containing the noise, and processing the GIS partial discharge signal containing the noise after the fractional order Fourier transform by adopting a minimum mean square error criterion in a fractional order Fourier transform domain to obtain an optimal signal-to-noise ratio of the GIS partial discharge signal containing the noise and an optimal order p0 corresponding to the optimal signal-to-noise ratio of the GIS partial discharge signal containing the noise; (3) when the order of the GIS partial discharge signal containing the noise is the optimal order p0, performing threshold preprocessing on the GIS partial discharge signal containing the noise; (4) conducting wavelet smoothing denoising on the GIS partial discharge signal having been s |
|---|