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。
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.
以自并励励磁系统为例，根据实测数据利用频域分析，得到励磁系统滞后特性。
With the bus fed static excitation system, based on field-test data and using frequency domain analysis, the hysteretic characteristics of excitation system wer.
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