The Application of Improved HHT to Harmonic Analysis and Fault Detection of Power System
Hilbert-Huang transform (HHT) is a new time-frequency-domain analysis method, which is suitable for non-stationary and nonlinear signals. In this paper, endpoint continuation and ensemble empirical mode decomposition (EEMD) decomposition method are introduced to improve the HHT, which solve the endpoint winger and modal aliasing problem. The improved HHT (IHHT) is used for analyzing the harmonic signal and detecting the fault signal of power system. Simulation results show that IHHT is feasible and effective for harmonic analysis and fault detection.
Hao Zhang, Yang Fu and Zhong Tang
W. H. Han et al., "The Application of Improved HHT to Harmonic Analysis and Fault Detection of Power System", Advanced Materials Research, Vols. 354-355, pp. 1406-1411, 2012