High impedance fault line selection method for resonant grounding system based on wavelet packet analysis

2018 ◽  
Author(s):  
QIN Hao ◽  
LI Tianyou
Keyword(s):  
Wavelet Packet ◽  
Selection Method ◽  
Fault Line ◽  
Wavelet Packet Analysis ◽  
Grounding System ◽  
Fault Line Selection ◽  
High Impedance ◽  
High Impedance Fault ◽  
Line Selection

The Fault Line Selection Method of Small Current Grounding System Based on Wavelet Transformation

2011 ◽  
Vol 354-355 ◽  
pp. 149-152 ◽  
Author(s):  
Hua Li ◽  
Ling Ling Li ◽  
Shan Shan Huang ◽  
Feng Qiang Li
Keyword(s):  
Wavelet Transformation ◽  
Selection Method ◽  
Matlab Simulation ◽  
Fault Line ◽  
Transformation Theory ◽  
Small Current ◽  
Grounding System ◽  
Fault Line Selection ◽  
Line Selection ◽  
Modulus Maxima

In order to make full use of small current grounding system transient information and to improve the accuracy of fault line selection, a method based on wavelet transformation was proposed. On the basis of wavelets transformation theory and its characteristics, a proper wavelet function was chosen up to take wavelet transform to collected fault data, and then to get the fault line according to the modulus maxima theory. The MATLAB simulation results show the effectiveness of the proposed techniques on improving the accuracy of fault line selection.

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