Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/8628
Title: Study of protection scheme for transmission line based on wavelet transient energy
Authors: Fan, C
Li, KK
Chan, WL 
Yu, W
Keywords: Modal transform
Power system protection
Transient energy
Wavelet analysis
Issue Date: 2006
Publisher: Elsevier
Source: International journal of electrical power and energy systems, 2006, v. 28, no. 7, p. 459-470 How to cite?
Journal: International journal of electrical power and energy systems 
Abstract: Wavelet transient energy is proposed to be the criterion of protection for distinguishing internal or external fault on transmission line in this paper. The modal voltage and current are decomposed by Daubechies 4 wavelet in both time and frequency. The different decomposition coefficients on different scales reflecting different frequency information are used to calculate the transient characteristic of voltage and current. The transient characteristic is then utilized to obtain the transient energy of the fault that is employed to identify the fault position. Simulation results show that the proposed protection scheme based on transient energy is applicable and encouraging. It is independent of fault type, switching angle and generation mode; not influenced by recloser and lightning surge. Single-line ground fault with high fault resistance can also be detected correctly. The proposed protection scheme has good selectivity, reliability and sensitivity.
URI: http://hdl.handle.net/10397/8628
ISSN: 0142-0615
DOI: 10.1016/j.ijepes.2006.02.006
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