摘要
为了分析输电线路杆塔架设后的引雷作用对配电线路雷击跳闸风险的影响以制定相关防雷策略,以珠江三角洲某地区某500 kV输电线路周围雷电地闪数据为样本,分析线路架设前后地闪活动分布规律和雷电流幅值概率分布变化情况。使用有限元分析软件对雷电先导下的主、配电线路电场分布情况进行仿真,最后形成结合输电线路周围雷电分布情况与主、配电线路在雷电先导下电场分布情况下,加强绝缘和避雷器安装范围的防雷策略,为输电线路周围配电线路的防雷工作提供依据。
In order to analyze the effects of triggering lightning on the distribution line lightning trip-out risk, after the transmission line tower has been set up, so as to formulate relevant lightning protection strategy. Taking the statistics of lightning around a 500 kV transmission line in the Pearl River Delta as the sample, the author analyzes the distribution of lightning and the probability of lightning current amplitude before and after the transmission line tower set up. The electric field distribution around the transmission and the distribution lines under the leader is simulated by using finite element analysis software. Finally, combining the lightning distribution around the transmission lines with the electric field distribution around the distribution lines under the leader, the reinforce insulation and arrester installation range, so as to provide the basis of lightning protection for the distribution lines around the transmission lines.
出处
《电瓷避雷器》
CAS
北大核心
2013年第3期92-99,104,共9页
Insulators and Surge Arresters
关键词
输电线路
配电线路
雷电先导
有限元分析
雷电流幅值分布
地闪密度
transmission line, distribution line, lightning leader, finite element analysis software,distribution of lightning current amplitude, lightning density
