Pilot Protection Scheme for Pole-to-ground Fault in DC Distribution Network

2019 ◽  
Author(s):  
Shan Jiang ◽  
Chunju Fan ◽  
Ning Huang
Keyword(s):  
Distribution Network ◽  
Protection Scheme ◽  
Ground Fault ◽  
Dc Distribution ◽  
Pilot Protection

scholarly journals Ring-shaped DC Distribution Network Protection Scheme Research Based-on Voltage Prediction

2019 ◽  
Vol 267 ◽  
pp. 042041
Author(s):  
Xiao Chang ◽  
Cheng Wang ◽  
Yizhao Liu ◽  
Min Zhang ◽  
Rui Fan ◽  
...  
Keyword(s):  
Distribution Network ◽  
Protection Scheme ◽  
Network Protection ◽  
Dc Distribution

scholarly journals A Method of Single-terminal MMC Single-pole Grounding Protection for DC Distribution Network Based on Multi-class Similarity Analysis

2021 ◽  
Vol 2066 (1) ◽  
pp. 012105
Author(s):  
Wei Zhang ◽  
YaFei Cao ◽  
YuanChun Fan
Keyword(s):  
Distribution Network ◽  
Simple Calculation ◽  
Similarity Analysis ◽  
Fault Current ◽  
Analysis Model ◽  
Ground Fault ◽  
Dc Distribution ◽  
Negative Current ◽  
Safety And Reliability ◽  
Simulation Results

Abstract Based on the analysis model of single-pole to ground fault occurred in single-ended MMC DC distribution network, the characteristics of single-pole to ground fault are studied. The similarity of positive and negative current between the fault feeder and the non-fault feeder, the similarity of fault current between the fault feeder and the non-fault feeder, and the similarity of positive and negative current sum between the two feeders are analyzed. Based on the differences among the three types of similarity, a new method of single-pole grounding protection for DC distribution network with MMC based on multi-type similarity analysis is proposed. The simulation results show that this method can accurately determine the fault feeder, and has the characteristics of strong anti-interference ability, simple calculation and easy implementation. It can effectively solve the problem of single-pole grounding protection of DC distribution network and effectively improve the safety and reliability of power supply of DC distribution network.

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