Ensemble Empirical Mode Decomposition for Power Quality Detection Applications
Lan Chen · Jisuanji fangzhen · 2010
According to the mode mixing problem caused by empirical mode decomposition(EMD),the Hilbert-Huang transform based on Ensemble Empirical Mode Decomposition(EEMD) is introduced into fault signal detection of power system,it can overcome the mode mixing problem in?a great extent,and ensure the physical meaning of signal components.The signal is firstly decomposed into intrinsic mode function(IMF) by the EEMD method,then Hilbert spectrum is obtained form Hilbert transform.The transient and disturbances can be analyzed and detected accurately through the Hilbert spectrum.Simulation results show that the method can be applied to fault signal detection of power system effectively.