Single Phase to Ground Fault Line Selection in Distribution Network Based on Signal Injection and Variational Mode Decomposition

2021 ◽  
Author(s):  
Lin Niu ◽  
Guiqing Wu ◽  
Zhangsheng Xu
Keyword(s):  
Single Phase ◽  
Distribution Network ◽  
Variational Mode Decomposition ◽  
Fault Line ◽  
Fault Line Selection ◽  
Ground Fault ◽  
Mode Decomposition ◽  
Line Selection ◽  
Signal Injection

Fault Line Selection in Resonant Grounded System Based on IMEn

2014 ◽  
Vol 960-961 ◽  
pp. 755-758
Author(s):  
Meng Zhang ◽  
Jian Wen Ren
Keyword(s):  
Empirical Mode Decomposition ◽  
Signal Analysis ◽  
Single Phase ◽  
Sample Entropy ◽  
Fault Current ◽  
Fault Line ◽  
Fault Line Selection ◽  
Ground Fault ◽  
Mode Decomposition ◽  
Line Selection

When the single phase ground fault occurs in resonant grounded system, there are significant differences in the components of fault phase current between fault line and non-fault line. This feature can be reflected by intrinsic mode entropy (IMEn) of fault current. IMEn is a new signal analysis over multiple oscillation levels. It corresponds to the sample entropy (SampEn) and the empirical mode decomposition (EMD). The results of fault simulations in different conditions indicate that the method is reliable.

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