Computation of Transformer Winding Initial Voltage Distribution

When the transformer winding encounters the surge of thunder and lightning voltage,a very high voltage is produced in the winding,which causes the initial voltage distribution of the winding not to be even.As a resuct,the transformer insulation is harmed.A good design of transformer insullation must be based on the voltage initial distribution of the transformer winding.The initial voltage distribution of DPF-24000/500 transformer,is computed and the biggest field intensity value of winding lead end is obtained,By comparison,this value has enough insulation margin.