Identification method of the high-resistance single-phase disconnection fault in distribution network based on distributed measurement

2019 ◽  
Author(s):  
Zhou Dai ◽  
Gang Wang ◽  
Kejun Li
Keyword(s):  
High Resistance ◽  
Single Phase ◽  
Distribution Network ◽  
Identification Method ◽  
Distributed Measurement

scholarly journals Single-phase ground fault identification method for distribution network based on inception model and sample expansion

2020 ◽  
Vol 1656 ◽  
pp. 012008
Author(s):  
Jiran Zhu ◽  
Kai Chen ◽  
Zhonghan Peng ◽  
Hailong Zhang ◽  
Xingchen Wan ◽  
...  
Keyword(s):  
Single Phase ◽  
Distribution Network ◽  
Fault Identification ◽  
Identification Method ◽  
Ground Fault

scholarly journals A novel fault section locating method based on distance matching degree in distribution network

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Zhenxing Li ◽  
Jialing Wan ◽  
Pengfei Wang ◽  
Hanli Weng ◽  
Zhenhua Li
Keyword(s):  
Single Phase ◽  
Distribution Network ◽  
Matlab Simulink ◽  
Grounding Resistance ◽  
Blind Zone ◽  
System Transition ◽  
Transition Resistance ◽  
Zero Sequence ◽  
Matching Degree ◽  
Amplitude Characteristics

AbstractFault section location of a single-phase grounding fault is affected by the neutral grounding mode of the system, transition resistance, and the blind zone. A fault section locating method based on an amplitude feature and an intelligent distance algorithm is proposed to eliminate the influence of the above factors. By analyzing and comparing the amplitude characteristics of the zero-sequence current transient components at both ends of the healthy section and the faulty section, a distance algorithm with strong abnormal data immune capability is introduced in this paper. The matching degree of the amplitude characteristics at both ends of the feeder section are used as the criterion and by comparing with the set threshold, the faulty section is effectively determined. Finally, simulations using Matlab/Simulink and PSCAD/EMTDC show that the proposed section locating method can locate the faulty section accurately, and is not affected by grounding mode, grounding resistance, or the blind zone.

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