Dianci bileiqi, 2017 雷击是造成输电线路跳闸的重要原因之一,雷击一般引起绝缘子串闪络导致线路跳闸,雷击引起档中导、地线空气间隙击穿导致线路跳闸较为罕见。针对一起500kV同塔双回输电线路雷击跳闸故障,通过建立绕击和反击电磁暂态模型,详细分析了绕击情况下和反击情况下该线路的过电压波过程,得出了雷击架空地线引起导、地线空气间隙击穿是本次故障的主要原因。最后,提出了防止同塔双回输电线路导、地线空气间隙击穿的措施。
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