High-performance epoxy insulating part local overheating defect simulation system and method

Abstract

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.

Description

technical field [0001] The invention belongs to the technical field of high-voltage testing, and in particular relates to a high-performance epoxy insulating part local overheating defect simulation system and method. Background technique [0002] At present, epoxy resin is a thermosetting resin with excellent performance, and its cured product has good heat resistance, chemical resistance, mechanical properties and electrical properties. With its excellent dielectric properties and other characteristics, it is widely used in the main insulation of capacitor cores of high-voltage DC dry-type bushings, dry-type transformers, pot insulators, composite pole towers and other power equipment insulation. However, in actual use, due to working at high current and high voltage for a long time and being affected by environmental factors, electrical equipment made of epoxy insulation will have some defects. [0003] High-performance epoxy materials are widely used in insulation equip...

AI Technical Summary

Problems solved by technology

[0007] The main problems in the existing technology are: the heating method belongs to the overall heating, which is not suitable for the simulation of local overheating defects, and the temperature is uncontrollable, which is easy to introduce foreign objects and interfere with the electromagnetic field around the experiment

It is difficult to solve this problem in terms of economic and operational difficulties

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