期刊
IEEE TRANSACTIONS ON POWER SYSTEMS
卷 23, 期 4, 页码 1701-1708出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPWRS.2008.2004736
关键词
Empirical mode decomposition; generator coherency; Hilbert-Huang transform; intrinsic mode function; proper orthogonal decomposition; wide-area measurement system
资金
- Industrial Research and Development unit of IIT-Delhil [M100056]
Coherency between generators is tracked, by examining the instantaneous phase differences among interarea oscillations and swing curves in disturbed multiarea power systems. Huang's empirical mode decomposition is applied to extract dominant oscillatory modes from interarea oscillations/swing curves. Hilbert transform on these modes yields their instantaneous phase. The coherency is thus revealed by the temporal evolution of the phase difference among interarea oscillations/generator swing curves. The technique is illustrated using simulations on a test system, as well as actual wide-area measurements.
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