高压电器2017，Vol.53Issue(8)：129-133,5.DOI:10.13296/j.1001-1609.hva.2017.08.022
10kV架空裸导线雷击断线机理仿真与试验研究
Simulation and Experimental Research on Lightning-caused Breaking Mechanism of 10 kV Overhead Line
摘要
Abstract
In order to ascertain lightning-caused breaking mechanism of 10 kV overhead transmission lines and improve the liability of distribution network system,in this paper,from 2 aspects of the simulation and experimental research,the lightning-caused breaking mechanism are analyzed.A mathematical model of multiple physical field coupling during lightning-caused breaking is established.The influence of interaction of heat,electricity,magnetism and force on the course of lightning-caused breaking is analyzed.The 10 kV line lightning test platform is built,the lightning breakdown point distribution test is carried out,and the arc plasma discharge diagnosis and arc shape evolution process,micro mechanism of internal lightning are analyzed.The simulation and test results show that lightning flashover position is in the insulator near 100～200 mm.According to the power supply position,two kinds of simulation models are established.When the power supply position on the left side,arc root is steady combustion at a position after 0.03 s,then lightning-caused breaking fault may occur.Therefore,the paper provides the basis for the lightning-caused breaking protection of 10 kV overhead transmission lines.关键词
雷击断线/击穿点分布特性/闪络电弧演变Key words
lightning-caused breaking/distribution characteristic of breakdown point/evolution process of flashover arc引用本文复制引用
高源,孙学东,张喆,葛国伟,廖敏夫,张永生,李红高..10kV架空裸导线雷击断线机理仿真与试验研究[J].高压电器,2017,53(8):129-133,5.基金项目
国家自然科学基金(51277020,51477024,51337001) （51277020,51477024,51337001）
中央高校基本科研业务专向基金(DUT15ZD234).Project Supported by National Natural Science Foundation of China(51277020,51477024,51337001),Fundamental Research Funds for Central Universities(DUT15ZD234). （DUT15ZD234）
