变压器绕组初始电压分布计算

Computation of Transformer Winding Initial Voltage Distribution

变压器绕组遭到雷电电压冲击时,在绕组中要引起很高的过电压,使绕组的初始电压分布不均匀,将给变压器的绝缘带来危害.为作好变压器的绝缘设计,必须掌握变压器绕组电压的初始分布情况.计算了DFP1-240000/500变压器的初始电压分布,得到了绕组首端的最大场强值,通过比较可知,此值有足够的绝缘裕度.

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.