Digital filter based on improved EEMD method
Chun Hu · Dianli zidonghua shebei · 2011
A kind of digital filter based on improved EEMD(Ensemble Empirical Mode Decomposition) method is proposed,which,aiming at the defects of EMD(Empirical Mode Decomposition) method,smoothes the noise-contained signal with the median filtering method to filter the impulse noise and then processes it with EEMD to filter the random noise and high-frequency continuous noise,without any mode mixing.Digital simulation is carried out to study its filtering effect and the simulative results show that,compared with the wavelet filtering method,it suppresses various noises of power system signal more effectively and has better filtering effect.