A novel principle of transformer protection using equivalent instantaneous leakage inductance, based on the transformer model loop equation, is proposed.

在变压器模型回路方程的基础上，应用等效瞬时漏电感，提出了一种新型变压器保护原理。

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On basis of transformer loop equation, a novel principle of transformer protection using equivalent instantaneous leakage inductance is presented.

该原理通过消去变压器回路方程中直接体现主磁通的非线性项，构造了仅含漏电感和绕组电阻的二端网络。

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