变压器励磁涌流的新判据

New ways to distinguish the surge of the transformer

提出了两种判断变压器励磁涌流的新方法 :从分析电流波形特点入手得出的二阶导数法和从励磁涌流产生的机理入手得出的电压突变量法。这两种方法同其它方法相比简单可靠 。

The paper presents two ways to distinguish the surge of the transformer.They are twi_fold derivative method got by analysing the characteristics of current waveform and ΔU method got from the theory of exciting surge. These two methods are more simple and reliable compared with the others.