Power transformer longitudinal insulation electric field calculation and analysis software

The transformer is one of the most important equipment of the power system, the accident that the lightning impact damages the transformer insulation often happens[1]. The main design method of transformer longitudinal insulation structure design is the wave process calculation which is basis on the transformer electromagnetic optimization design[2] [3]. So research the wave process of the transformer windings under the effect of shock wave is very necessary. For the finite element simulation technology is used widely in the engineering design, this paper uses the lumped parameter equivalent circuit calculate and analysis the winding wave process of large power transformer, can reduce the calculation time, improve the efficiency of calculation, and also can write general computing applications, which is convenient for calculating various types of large transformer.