Effect of Corona Aging on Dielectric Properties of Nanocomposite PI Thin Films

doi:10.3969/j.issn.1008-0198.2024.04.007

Hunan Electric Power ›› 2024, Vol. 44 ›› Issue (4): 47-51.doi: 10.3969/j.issn.1008-0198.2024.04.007

• Researches and Tests • Previous Articles Next Articles

Effect of Corona Aging on Dielectric Properties of Nanocomposite PI Thin Films

ZHANG Liang^1,4, ZHANG Shumeng^2,4, CHEN Yijie^3,4, LIU Daosheng⁴

1. Chang'an Hunan New Energy Technology Co.,Ltd., Yiyang 413000, China;
2. Hunan Nonferrous Environmental Research Institute Co.,Ltd.,Changsha 410125, China;
3. Guangfeng Cigarette Factory, Jiangxi China Tobacco Industry Co.,Ltd.,Guangfeng 334600, China;
4. Jiangxi University of Science and Technology, Ganzhou 341099, China

Received:2024-01-12 Online:2024-08-25 Published:2024-09-09

Abstract

Abstract: High temperature superconducting amorphous alloy transformers, as low-temperature operating equipment, have energy-saving and consumption reducing functions. The low-temperature resistant polyimide (PI) film is selected as the main insulation material for high-temperature superconducting amorphous alloy transformers, the preparation process of PI film is improved , a corona aging system is built, and corona aging pretreatment on PI film is performed. A study is conducted on the dielectric properties of films pre-treated with corona aging, and it is found that the dielectric loss tangent of films pre-treated with corona aging in liquid nitrogen environment is lower than that in room temperature environment. When the mass fraction is less than or equal to 5%, the dielectric loss tangent of PI films filled with nanoparticles is smaller than that of the films before treatment.

Key words: high-temperature superconductivity, corona aging, PI film, liquid nitrogen, breakdown field strength

CLC Number:

TM851

ZHANG Liang, ZHANG Shumeng, CHEN Yijie, LIU Daosheng. Effect of Corona Aging on Dielectric Properties of Nanocomposite PI Thin Films[J]. Hunan Electric Power, 2024, 44(4): 47-51.

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Effect of Corona Aging on Dielectric Properties of Nanocomposite PI Thin Films

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