Title :
Study of wavelet-based ultra high speed directional transmission line protection
Author :
Chen, Wei ; Malik, O.P. ; Yin, Xianggen ; Chen, Deshu ; Zhang, Zhe
Author_Institution :
Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
A novel wavelet-based directional protection scheme is presented in this paper. Using the theory of wavelet singularity detection as a powerful signal-processing tool, the initial arrival of the traveling wave and its sign can be identified reliably. Characteristics of the proposed directional protection algorithm are analyzed and results of simulation studies are given. The wavelet-based directional protection scheme solves several problems existing in current protective relays and is suitable for use as an ultra high speed UHV/EHV transmission line protective relay.
Keywords :
power transmission lines; power transmission protection; relay protection; signal processing; wavelet transforms; current protective relays; signal-processing; transmission line protection; traveling wave arrival; ultra high speed UHV/EHV transmission line protective relay; ultra high speed directional protection; wavelet singularity detection theory; wavelet-based directional transmission line protection; Artificial neural networks; Fault diagnosis; Power system faults; Power system protection; Power system relaying; Power system stability; Power system transients; Protective relaying; Voltage; Wavelet transforms;
Journal_Title :
Power Delivery, IEEE Transactions on
DOI :
10.1109/TPWRD.2003.817511
