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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51804

Title: Analysis of Power System Low Frequency Oscillation with Empirical Mode Decomposition
Authors: Chia-Liang Lu
Chia-Yu Hsu
Pei-Hwa Huang
Contributors: 國立臺灣海洋大學:電機工程學系
Keywords: power system stability
low frequency oscillation
empirical mode decomposition
time-frequency analysis
Date: 2018-08
Issue Date: 2018-12-25T01:23:41Z
Publisher: Journal of Marine Science and Technology
Abstract: ABSTRACT: The low frequency oscillation (LFO) in power systems often
consists of composite responses of various oscillation modes.
Thus a direct analysis of LFO for revealing system dynamic characteristics is not straightforward. The primary objective of this
study is to utilize the method of empirical mode decomposition
(EMD) to expand the LFO response under study into multiple
intrinsic mode functions (IMFs) for detailed investigation of
power system dynamics. Then time-frequency power information
is explored using wavelet transform to obtain time-frequency
power graph which is further resolved into a time-frequencypower diagram. Finally, information from the time-frequencypower diagram is further examined to determine those generators
that demonstrate higher degree of participation in the LFO of
power system. The comparative analysis in frequency domain
shows that, at specific frequencies in LFO modes, higher oscillation participation power also shows a larger participation factor
in its frequency domain analysis.
Relation: 26(4) pp.477-486
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51804
Appears in Collections:[電機工程學系] 期刊論文

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