Institute of Electrical Engineering;
Shenyang University of Technology;
Shenyang 110870;
China;
Liaoning ProvinceKey Laboratory of Safe Operation & Monitoring of Power Grid;
Shenyang 110870;
China;
Tancheng County Power SupplyCompany of State Grid Corporation;
Shandong Tancheng 276100;
China;
SVM; energy entropy; high voltage circuit breaker; intelligent diagnosis;