Generator Coherency Using the Wavelet Phase Difference Approach

In this paper, the wavelet phase difference (WPD) approach is applied for the identification of power system areas with coherent generator groups. This approach allows observation, at different frequency bands, of movement of low frequency electromechanical oscillations (LFEO), identified at differe...

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Bibliographic Details
Published in:IEEE transactions on power systems 2014-01, Vol.29 (1), p.271-278
Main Authors: Avdakovic, Samir, Becirovic, Elvisa, Nuhanovic, Amir, Kusljugic, Mirza
Format: Article
Language:English
Subjects:
Coherence
Conferences
Continuous wavelet transforms
Discrete wavelet transform
Discrete wavelet transforms
Frequency bands
generator coherency
Generators
Hilbert-Huang transform
Low frequencies
Oscillations
Oscillators
Phase shift
power system
Power system dynamics
Time-frequency analysis
Transforms
Wavelet
wavelet phase difference
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Summary:In this paper, the wavelet phase difference (WPD) approach is applied for the identification of power system areas with coherent generator groups. This approach allows observation, at different frequency bands, of movement of low frequency electromechanical oscillations (LFEO), identified at different parts of the power system and the identification of the inter-area components that move or do not move together. An illustration of the applied approach was performed on the New England (NE) 39-bus test system. The interesting results of WPD application are also presented in a real wide-area measurement data from European interconnected power system. By using the discrete wavelet transform (DWT) and Hilbert-Huang transform (HHT), the validation of results from WPD approach is also given.
ISSN:0885-8950
1558-0679
DOI:10.1109/TPWRS.2013.2279881