杆塔雷电反击的计算方法及试验验证

Calculation and test verification for tower lighting counterattack under direct stroke

过电压保护规程和电磁场分析法在处理杆塔雷电反击特性时存在一定的缺陷。文中采用感应电荷法分析和计算线路杆塔雷电反击特性以及计算线路绝缘子串两端的电压分布,并通过小模型试验对计算结果进行验证。

Traditional method suggested by over-voltage protection regulations and former methods using electromagnetic field have some defects in dealing with tower lighting counterattack. The paper described a method using quasi-static electromagnetic field model to analyze tower counterattack performance under direct stroke and to calculate the voltage distribution on both sides of tower insulator. The method was verified by small model tests.