DocumentCode :
3184018
Title :
A novel busbar protection scheme based on wavelet multi-resolution signal decomposition
Author :
Shiyong Wang ; Xinzhou Dong ; Shenxing Shi
Author_Institution :
Dept of Electr. Eng., Tsinghua Univ., Beijing, China
fYear :
2010
fDate :
March 29 2010-April 1 2010
Firstpage :
1
Lastpage :
5
Abstract :
A novel busbar protection scheme based on wavelet transform is proposed in this paper. This busbar protection scheme utilizes the characteristic of multi-resolution signal decomposition of wavelet transform to decompose the fault current signals into different frequency bands. The differential current signals are computed from the decomposed current signals. This busbar protection scheme utilizes not only the power frequency currents but also the high frequency currents. High frequency currents enable the busbar protection to operate fast. Power frequency currents can improve reliability of the busbar protection. Alternative Transients Program (ATP) simulations are used to test and validate the proposed scheme. The scheme is immune to CT saturation and is fast, reliable and feasible.
Keywords :
busbars; fault currents; power system transients; wavelet transforms; alternative transients program; busbar protection scheme; fault current signals; high frequency currents; power frequency currents; wavelet multiresolution signal decomposition; wavelet transform; busbar protection; modulus maxima; multi-resolution signal decomposition; wavelet transform;
fLanguage :
English
Publisher :
iet
Conference_Titel :
Developments in Power System Protection (DPSP 2010). Managing the Change, 10th IET International Conference on
Conference_Location :
Manchester
Type :
conf
DOI :
10.1049/cp.2010.0309
Filename :
5522166
Link To Document :
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