A novel robust magnetizing inrush fast identification criterion based on partial hausdorff distance

The secondary equipment such as protection under complicated electromagnetic condition of substation may mal-operate due to false data caused by electromagnetic interference. However, conventional transformer magnetizing inrush identification method have not considered the influence of false data. By analyzing the influence of false data on different methods, it can be concluded that existing methods may slow-operate even mal-operate. To solve the problem, a new magnetizing inrush identification method based on similarity identification is proposed to prevent this sort of maloperation, and this method has advantage to trip quickly.