摘要
针对雷击10 kV架空配电线路时,配电线路直击雷过电压的计算与分析展开了一系列的研究。利用ATP-EMTP软件建立了直击雷过电压仿真模型,对比分析了雷直击杆塔顶部和雷直击相导线两种情况下的直击雷过电压波形和幅值。对10 kV农村架空配电线路遭受高幅值雷电流时的直击雷闪络特性做出了相关计算,给出了遭受高幅值雷电流时的绝缘闪络个数,雷击闪络时的雷电流沿线分布情况。仿真结果表明,雷电流幅值越大,雷击瞬间发生杆塔闪络的范围也在扩大,而且发生闪络的杆塔入地电流沿雷击点向两边递减。
In case of the lightning strike on 10 kV overhead distribution lines, a series of studies on the calculation and analysis of distribution lines direct lightning overvoltage are carried out. Based on ATP-EMTP software, the simulation model of direct lightning overvoltage is established, and the direct lightning overvoltage waveform and amplitude when lightning strike the top of the tower or strike the lightning conductors. The relevant calculations about flashover performance against direct lightning when the high amplitude lightning current strikes 10kV rural overhead distribution lines are carried out, and the numbers of insulation flashover and the lightning current distributions along the lines when subjected to high magnitude lightning current are provided. The simulation results show that the greater the lightning current amplitude, the range of lightning flashover tower is expanding, and the current into the ground is descending along the lightning point to both sides.
出处
《电瓷避雷器》
CAS
北大核心
2015年第5期154-158,共5页
Insulators and Surge Arresters
