参数辨识在SCOTT变压器保护中的应用

牵引变压器是牵引供电系统中重要的电气设备，变压器电流差动保护的核心问题是励磁涌流和内部故障电流的识别，目前的识别方法存在误动作的可能性，结合辨识理论和最小二乘算法，提出了基于参数辨识的SCOTT变压器保护原理。该方法能有效地区分牵引变压器内部故障与励磁涌流。

Identification of winding parameter application in SCOTT transformer protection

Traction transformers are important devices in electric railways system, inrush current identification and internal fault conditions is a key problem of transformer protection. At present, the distinguishing method may misoperated. Based on system identification and east-square technique, a new theory of transformer protection based on parameter identification is being predominant in distinguishing magnetizing rush current from fault current.