The invention belongs to the technical field of high-
voltage tests and discloses a high-performance 
epoxy insulator local overheating defect 
simulation system and method. The 
system comprises a heating module and a 
temperature control module, wherein the temperature heating module is arranged in a reserved opening in the middle of an insulating support, a grounding 
copper sheet is arranged at an upper end of the heating module, and an 
epoxy insulating part to be tested is arranged at an upper end of the grounding 
copper sheet; the 
temperature control module comprises an adjustable direct-
current voltage source, a temperature sensor and a temperature digital display meter, the adjustable direct-
current voltage source and the temperature sensor are respectively connected with the heating module, and the temperature digital display meter is connected with the temperature sensor. The 
system is advantaged in that the 
temperature control device is installed on a lower surface of the grounding 
copper sheet, the 
electric field borne by the sample is not affected, meanwhile, the temperature control device is isolated from the high-
voltage part, and therefore the temperature control device can work safely and normally, the power is adjusted manually, the temperature of the point is controlled, and the temperature of other parts of the tested sample is not affected; and 
simulation of the local overheating defect of the 
epoxy insulating part is completed.