Abstract
With the time-frequency localization characteristics embedded in Wigner distribution, the time and frequency information of a waveform can be both integrally presented. Yet, due to the cross-term problem, the inspection performance is often affected. Therefore, in this study, with the assistance of a window function design, we have proposed a modified Wigner distribution method and applied to voltage flicker-generated signal analysis. This approach not only effectively reserves the merits of Wigner distribution and short-time Fourier transform, but also highly decreases the probability of cross-term occurrence. In order to confirm the feasibility of the method, it has been tested to inspect several voltage flicker-generated signals collected from both simulated waveforms and field measurements. Test results support the feasibility of the method for the application investigated.
| Original language | English |
|---|---|
| Pages (from-to) | 275-281 |
| Number of pages | 7 |
| Journal | International Journal of Electrical Power and Energy Systems |
| Volume | 44 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2013 Jan |
All Science Journal Classification (ASJC) codes
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering