基于序电流分量的变压器励磁涌流识别方法

变压器励磁涌流的识别问题一直是变压器保护中的一个难题。文章提出了基于序电流分量的识别方法，通过对励磁涌流中零负序电流分量的分析，发现在变压器空载投入和内部故障时空载投入两种情况下零负序电流值有明显的不同，从而实现对励磁涌流的识别。仿真表明，该方法理论上是可行的。

A Method for Discerning Inrush Current Based on Sequence Current

To discern inrush current of transformer has been a difficult problem all the time . This paper presents a new decern method that based on sequence electric current. Analyzing sequence current, sequence current between the transformer is unloaded to put into and is put into with interal fault is obvious different,the inrush current and the fault current can be discerned. Emulation indicates this scheme is feasible.