摘要
提出一种识别变压器励磁涌流和故障电流的简单算法。该算法的基本思路是在一个给定的移动数据窗内 ,励磁涌流在间断角处曲线与时间轴所包围的面积很小甚至趋于零 ,由波形曲线与时间轴所包围面积的大小构成鉴别励磁涌流的判据。仿真结果表明 ,该算法特征明显 ,鉴别准确。
A simple method of discrimination between inrush current and internal fault current of transformer is proposed.The underlying idea of the proposed scheme is to discriminate inrush current and internal fault current according to the fact that area value between the curve of inrush current at the dead angle and the time axis is much smaller than that of fault current or tends to zero in one given moving data window.The discrimination criteria is given by the area value mention above.The simulation results are presented to show the much obvious characteristics and much accurate discrimination of the proposed scheme.
出处
《电工技术杂志》
2003年第12期47-49,共3页
Electrotechnical Journal
