变压器励磁特性的修正BP模型

在变压器励磁特性的BP模型基础上，提出了一种修正的BP模型，并推导了相应的算法。它通过添加一线性项来模拟励磁支路深度饱和后的特性。结果表明，与已有的修正反正切函数或双曲函数模型相比，该模型不仅具有较高的精度，而且对变压器饱和特性的模拟也更为合理。该模型对于变压器励磁涌流与操作过电压计算的准确性，具有重要的意义。

Modified BP Model for Transformer Excitation Characteristics

Based on the BP(back propagation) model for excitation characteristics of transformer, a modified BP model is presented and the corresponding algorithm is also deduced.The characteristics of deeply saturated magnetizing branch are simulated by adding a new linear term. The results show that the model has good fitting precision.It is more reasonable than traditional modified arc tangent function or hyperbolic function model for the saturation characteristic of transformer. It is of great importance for calculating the magnetizing inrush currents of transformer and switching surges.