Electrical insulation electric heating ageing testing equipment

Abstract

The invention discloses electric insulation electric-heating aging test equipment, which comprises non-vignetting high-voltage testing transformer and at least one test box, wherein the box body of the test box is adiabatic; the inside of the test box is provided with a heating device; the top of the test box is provided with at least one high-voltage electrode connected with the high-voltage output end of the non-vignetting high-voltage testing transformer, while the lower part is provided with at least one detection terminal; and the high-voltage electrode and the detection terminal are respectively insulated from the box body of the test box. The electric insulation electric-heating aging test equipment can effectively simulate the electrical and thermal stress on electric equipment during operation, and carries out experiment on a plurality of test samples under different temperatures, voltage types and voltage grades; moreover, the test equipment obtains the data of current waveform and local discharging signal during the aging process of test samples.

Description

technical field [0001] The invention relates to a test device, in particular to a test device for electrical insulation and electric heat aging. Background technique [0002] The key equipment in the power system, such as transformers, power cables, etc., are insulated by mineral oil, fiber paper or high molecular polymer. In the long-term operation process, due to the influence of electricity, heat, machinery, environment and other factors, it will gradually age, resulting in the decline of physical, chemical and electrical performance, which seriously affects the operation reliability of the power system. Through the method of accelerated aging test, it is an important means to ensure the safe operation of the power grid to study the aging characteristics of electrical equipment insulation and evaluate the remaining life. [0003] At present, the accelerated aging test equipment at home and abroad mainly conducts accelerated aging tests on small materials and electronic c...

AI Technical Summary

Problems solved by technology

[0003] At present, the accelerated aging test equipment at home and abroad mainly conducts accelerated aging tests on small materials and electronic components through accelerated stress means such as heat, light, weak electricity, and vibration, and none of them can achieve the acceleration of electrical-thermal bonding of insulating materials for high-voltage electrical equipment. Ageing

Studies have shown that electrical signals such as partial discharge are closely related to the insulation performance of equipment, and the current accelerated aging test devices cannot effectively detect electrical signals during sample aging tests.

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