An integrate method of locating fault line under single phase to ground fault in distribution network

2009 ◽  
Author(s):  
Yao-Quan Yang ◽  
Li-Li Jia ◽  
Li-Ye Dang
Keyword(s):  
Single Phase ◽  
Distribution Network ◽  
Fault Line ◽  
Ground Fault ◽  
Integrate Method

The Research Based on Zero Sequence Energy to the Line Selection in Distribution Network

2012 ◽  
Vol 614-615 ◽  
pp. 846-849
Author(s):  
Shu Tian ◽  
Jin Peng He ◽  
Yu Zheng
Keyword(s):  
Single Phase ◽  
Distribution Network ◽  
Power Network ◽  
Fault Line ◽  
Ground Fault ◽  
Arc Suppression Coil ◽  
Zero Sequence ◽  
Line Selection ◽  
Fault Lines ◽  
Resistance Component

When single phase-to-ground fault happened in power network with arc suppression coil grounded, capacitor current through fault point is compensated and reduced by installing arc suppression coil. Zero-sequence current’s amplitude and phase of fault lines and sound lines are so similar that it increases the difficulty of selecting the fault line. But the resistance component of zero sequence current has no relationship with the arc extinguishing coil compensation, absolute value of resistance component to the fault lines show the maximum, and zero sequence current’s polarity of fault lines is contrary to sound lines. In this paper, because of the characteristic of resistance component, a method is put forward based on zero sequence energy to the line selection in distribution network, it import auto-reclosing techniques into the line selection. The principle is verified by MATLAB simulator. It has high accuracy to select the fault line with this method.

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