摘要
为了在雷害发生后正确区分雷击跳闸的类型,以采取针对性的防雷措施,仿真研究了雷击后避雷线至杆塔支路以及三相绝缘子串上流过的电流,总结出基于电流测量判断线路雷击类型的方法:避雷线至杆塔支路的电流比绝缘子串支路电流大得多时发生了反击闪络;绝缘子串支路电流比避雷线至杆塔支路电流大时发生了绕击闪络。这一判据具有普遍适用性。
The simulations on the current from lightning conductor to tower branch after lightning and that through three phase insulators are carried out,and a method for making lightning type judgement based on lightning current mensuration is summarized in the paper as following： As the current from lightning conductor to tower branch was much larger than that of insulator branch,a back flashover happened;and while the latter was greater than the former,a shield flashover happened.This criterion has general applicability.
出处
《南方电网技术》
2011年第6期33-35,共3页
Southern Power System Technology
关键词
输电线路
绕击
反击
transmission line
shielding failure
back flashover
