Enhancement of digital equivalent voltage flicker measurement via continuous wavelet transform

Shyh Jier Huang, Chen Wen Lu

研究成果: Article同行評審

62 引文 斯高帕斯(Scopus)

摘要

In this paper, a continuous wavelet transform-based approach is proposed to assist the measurement of voltage flicker. With the time-frequency localization characteristics embedded in wavelets, the time and frequency information of a waveform is seen integrally presented, thereby enhancing the monitoring capability of voltage flicker signals at different time intervals. By embodying the Gaussian wavelet function, this proposed wavelet-direct demodulation method was also compared with the frequency-domain direct demodulation and indirect demodulation approaches based on the evaluation of flicker-frequency response and the amount of system frequency deviation. Comparison results indicated that the proposed method owns the higher reliability and better visualization. Signal components at any frequency-of-interest can be also more easily supervised. The approach has been applied to investigate various simulated voltage flicker-generated signals, and inspect the data recorded from the actual arc furnace operation. Test results support the proposed method in good agreement.

原文English
頁(從 - 到)663-670
頁數8
期刊IEEE Transactions on Power Delivery
19
發行號2
DOIs
出版狀態Published - 2004 四月

All Science Journal Classification (ASJC) codes

  • 能源工程與電力技術
  • 電氣與電子工程

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