scholarly journals A Novel Ground Fault Non-Directional Selective Protection Method for Ungrounded Distribution Networks

Energies ◽  
2015 ◽  
Vol 8 (2) ◽  
pp. 1291-1316 ◽  
Author(s):  
Ricardo Granizo ◽  
Francisco Blánquez ◽  
Emilio Rebollo ◽  
Carlos Platero
Keyword(s):  
Distribution Networks ◽  
Selective Protection ◽  
Ground Fault ◽  
Protection Method

Research on Single-Phase Grounding Fault in Distribution Networks with a DC Power Positioning Method

2014 ◽  
Vol 530-531 ◽  
pp. 353-356
Author(s):  
Run Sheng Li
Keyword(s):  
Power Distribution ◽  
Single Phase ◽  
Distribution Network ◽  
Distribution Networks ◽  
Power Distribution Network ◽  
Power Outage ◽  
Location Method ◽  
Fault Resistance ◽  
Ground Fault ◽  
Positioning Method

Due to the high ground fault resistance and the complexity of power distribution network structure (such as too many nodes, branches and too long lines), adopting common traveling wave method and ac injection method can not effectively locate the single-phase grounding fault in the distribution network system.To solve above problems and determine the position of the point of failure prisely, this paper adopted the dc location method of injecting the dc signal from the point of failure under the power outage offline. This paper introduces the single phase dc method and the method of three phase dc, and the simulation shows that the dc location method is effective and feasible.

Sign in / Sign up

Export Citation Format

Share Document