摘要
10kV配网线路由于绝缘水平低,易因直击雷过电压和感应雷过电压引起线路跳闸和停电事故,因此更加有效的适合于架空裸导线和架空绝缘导线的配网线路防雷措施一直是研究的热点之一。本文设计了一种新型续流释放雷击防护装置,基于其结构和安装研究了直击雷和感应雷防护的数学模型,以及工频续流释放数学模型。仿真结果表明:该新型装置不仅能有效防雷,而且在工频续流释放能力上具有优异的性能。配合装置成本低,无电阻片老化,易于安装等优点,将有效应用于配网线路防雷。
Because of the 10kV distribution line’s low insulation level,line tripping and power outages are easily caused by direct lightning overvoltage and lightning induced overvoltage.Therefore more effective lightning protection of distribution line in overhead uncovered conductor and overhead insulated conductors has been one of the active research.In this paper,a new type of lightning protection device with continuous-flow is designed.Based on its structure and installation,the mathematical models of direct lightning protection,induction lightning protection and continuous-flow release are studied.The simulation results show that the new device not only can effectively prevent lightning,but also has excellent performance in power frequency current release capability.The utility model has the advantages of low cost,no aging of the valve plate,easy installation,etc.the utility model can be effectively applied to the lightning protection of the distribution network.
作者
吴樟生
张周胜
董娜
史雪艳
WU Zhangsheng;ZHANG Zhousheng;DONG Na;SHI Xueyan(Electric Power Engineering,Shanghai University of Electric Power,Shanghai 200090,China)
出处
《电瓷避雷器》
CAS
北大核心
2019年第2期134-141,共8页
Insulators and Surge Arresters
关键词
配网线路
工频续流释放
感应雷过电压
直击雷过电压
球间隙
distribution line
power frequency current release
lightning induced overvoltage
direct lightning overvoltage
spherical gap
