TITLE:
Fault Location Method Based on EEMD and Traveling-Wave Speed Characteristics for HVDC Transmission Lines
AUTHORS:
Jing Liu, Jiandong Duan, Hailong Lu, Yuanbing Sun
KEYWORDS:
Traveling Wave, Fault Location, EEMD, Instantaneous Frequency
JOURNAL NAME:
Journal of Power and Energy Engineering,
Vol.3 No.4,
April
14,
2015
ABSTRACT: This paper presents a method of Traveling
Wave Fault location based on the improved Hilbert- Huang Transform. First, Intrinsic
Mode Functions (IMF) of traveling waves are extracted by Ensemble Empirical
Mode Decomposition (EEMD). Then Hilbert Transform is applied to calculate the
corresponding instantaneous frequency of the highest frequency component (IMF1),
the instantaneous frequency and corresponding time-frequency graph are
obtained. Second, the arrival time and speed can be detected by the first
instantaneous frequency’s mutational point. Finally, the improved two-terminal
traveling wave fault location principle is used to calculate the fault distance.
Relevant simulation results are performed to verify the correctness of the
method by EMTDC software.