期刊
JOURNAL OF MODERN POWER SYSTEMS AND CLEAN ENERGY
卷 4, 期 1, 页码 19-27出版社
SPRINGEROPEN
DOI: 10.1007/s40565-016-0188-5
关键词
Adaptive waveform matching extension; End effect; Improved Hilbert-Huang transform; Microgrid; Power quality
资金
- National High Technology Research and Development Program of China (863 Program) [2015AA050104]
- National Natural Science Foundation of China [51577068]
With the significant improvement of microgrid technology, microgrid has gained large-scale application. However, the existence of intermittent distributed generations, nonlinear loads and various electrical and electronic devices causes power quality problemin microgrid, especially in islanding mode. An accurate and fast disturbance detection method which is the premise of power quality control is necessary. Aiming at the end effect and the mode mixing of original Hilbert-Huang transform (HHT), an improved HHT with adaptive waveform matching extension is proposed in this paper. The innovative waveform matching extension method considers not only the depth of waveform, but also the rise time and fall time. Both simulations and field experiments have verified the correctness and validity of the improved HHT for power quality disturbance detection in microgrid.
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