Fault Line Selection with Parallel Supply Lines in Mine Power Networks

XIN Jian; WANG Chonglin; WANG Yangyang

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Fault Line Selection with Parallel Supply Lines in Mine Power Networks

XIN Jian 1 #,WANG Chonglin 2 *,WANG Yangyang 2

1.School of Information and Electrical Engineering, China University of Mining & Technology

2.School of Information and Electrical Engineering, China University of Mining & Technology, Xuzhou 21008

*Correspondence author

#Submitted by

Subject:

Funding: none

Opened online: 5 August 2011

Accepted by: none

Citation: XIN Jian,WANG Chonglin,WANG Yangyang.Fault Line Selection with Parallel Supply Lines in Mine Power Networks[OL]. [ 5 August 2011] http://en.paper.edu.cn/en_releasepaper/content/4437144

In mine power networks, parallel supply is a common kind. The failure probability of these lines is high, protection false operation and failure operation often take place and the fault line is difficult to be selected. In this paper a novel method based on phase-to-phase current difference is proposed as line selection criterion. The simulation results using PSCAD and experiment results show that the method has a high accuracy and a great ability of anti-disturbance. It also applies to any distribution system with different grounding patterns.

Keywords:electric power system and automation; fault line selection; parallel supply lines; mine power sytem

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