Single-phase-to-ground fault line selection and location technology in distribution network based on signal similarity

2021 ◽  
Author(s):  
Xinyu Zhang ◽  
Yang Wang ◽  
Zenghao Liu ◽  
Wei Du ◽  
Xiaoxiao Hu ◽  
...  
Keyword(s):  
Single Phase ◽  
Distribution Network ◽  
Fault Line ◽  
Fault Line Selection ◽  
Ground Fault ◽  
Line Selection ◽  
Signal Similarity

Line Selection Analysis of Ground Fault in Distribution Network Based on Chief Half-Wave and Remnant Current

2012 ◽  
Vol 482-484 ◽  
pp. 2197-2203 ◽  
Author(s):  
Fang Peng ◽  
Yu Shen Zhou ◽  
Yong Feng Liu ◽  
An Hui Yuan ◽  
Lei Zhu
Keyword(s):  
Distribution System ◽  
Single Phase ◽  
Neutral System ◽  
Selection Methods ◽  
Fault Line ◽  
Fault Line Selection ◽  
Ground Fault ◽  
Half Wave ◽  
Line Selection ◽  
Isolated Neutral

Abstract：This paper analyses characteristics of single-phase ground fault in distribution system. Now, most of the line selection methods have some limitations, which leads to the low accuracy of the fault line selection. In order to solve above problems, make use of the matlab software in this article to simulate and analyze the isolated neutral system and resonance neutral earthing system when they occur single-phase ground fault. Finally, the new method based on first half wave method and increment of residual current to improve the accuracy of fault line selection is proposed.

Grounding Failure Detection Based on ELM Information Fusion in Distribution Power Systems

2013 ◽  
Vol 325-326 ◽  
pp. 565-568
Author(s):  
Yu Sheng Zhou ◽  
Yong Feng Liu ◽  
Xiang Jun ◽  
Zheng Pan
Keyword(s):  
Power Systems ◽  
Information Fusion ◽  
Information Integration ◽  
Single Phase ◽  
Wavelet Packet ◽  
Distribution Network ◽  
Failure Detection ◽  
Fault Line ◽  
Fault Line Selection ◽  
Line Selection

For the complexity of the distribution network and the particularity of single-phase grounding fault, intelligent distribution network grounding fault line selection model based on the Extreme Learning Machine (ELM) information integration is proposed in the paper. When a single-phase grounding fault happened, the relation functions for the wavelet packet decomposition, the fifth harmonic method and the traveling wave method are respectively determined, the fault estimate data of transient zero-sequence current are calculated. The fault line is accurately judged by the ELM networks information fusion. Through analyzing MATLAB simulation result about different ground fault line selection, the validity and accuracy of the method are verified.

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