配电网中感应雷电波传变特性的研究

摘要

本文从理论上分析了感应雷电波从架空配电线到变压器低压端的传输特性。基于Agrawal模型对感应雷击电磁脉冲作用下配电线路-变压器系统的过电压进行数值模拟，得到变压器接入对线路末端感应电压影响的仿真结果；采用传输线等效电路模型和戴维南等效定理，将雷击感应电压作用到配电变压器上，仿真计算了雷击浪涌传变到变压器低压侧的特性。%This paper theoretically analyzes the transmission characteristics of induction lightning waves from the overhead distribution lines to the transformer low voltage side. According to the Agrawal transmission line model, the induced voltage of power-line transformer system was analyzed, and the simulation results on the effect of transformer interconnected to the line was obtained. Using transmission line equivalent circuit model and the Thevenin equivalent theorem, supplying lightning induced voltage to distribution transformer, simulating calculation was done.