Research on Monitoring and Prevention Technology of 10 kV Overhead Bare Wire Grounding Fault Based on Insulating Bush
Tree barrier is the main cause of grounding fault of 10kV distribution line,which seriously restricts the power supply efficiency of terminal distribution line.In this paper,aiming at the frequent grounding phenomenon of 10 kV overhead line passing through the forest area,the scheme of laying insulation casing with current monitoring is proposed to protect the bare line in the tree barrier area,so as to prevent the occurrence of grounding fault,reduce the line loss of distribution network and improve the power supply efficiency.Firstly,the mechanism of tree barrier grounding problem was analyzed.Then the method of grounding fault monitoring and prevention based on insulating casing is described in detail.Thirdly,a simple insulating sleeve with current monitoring function was developed.Finally,the research results were tested in a distribution line of State Grid Zhejiang Electric Power Company,and the effectiveness of the research results was tested,and it turned out praised by users.
tree barrier problem10kV overhead lineinsulating bushearth fault monitoring
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