煤矿110kV变电站防雷电侵入波仿真研究

Simulation study on lightning protection intruding waves of 110kV transformer substation in coal mine

通过利用电磁暂态软件ATP-EMTP建立完善的煤矿变电站仿真系统。通过模拟雷击变电站110 kV进线段情况,研究煤矿变电站主变压器周围避雷器安装位置不同时,其高低压侧与母线承受的雷电过电压幅值与持续时间进行仿真计算,并根据仿真计算得出的结果提出最优安装原则,使该变电站主变压器在受雷电侵入波影响时的过电压幅值最小。

Simulation system of substation was built through electromagnetic transient software ATP-EMTP. Based on simulating specific circumstances of 110 kV into line, the lightning arresters were installed on main transformer of a coal mine substation which were not in the same position, the high and low voltage side with the bus under the lightning overvoltage amplitude and duration were made simulation calculation. Optimal installation principles were put forward through these results, which could minimize the overvoltage magnitude at time of transformers suffering intruding wave in substation