The symmetric inrush of power transformer is a complex problem recently.
对于电力变压器的对称励磁涌流，目前还是一个棘手的问题。
The cause of symmetric inrush is analyzed, and the simulation results show that the ratio of second harmonic in the symmetric inrush is not lower than that in the asymmetric inrush.
同时，分析变压器对称涌流产生的原因，计算说明对称涌流中的二次谐波比并不一定比单侧涌流低。
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