Analysis of self-breakdown characteristics of air-insulated gas switch at different environmental temperature

Yao Weibo; Wei Hao; Yang Sen; Wang Zhiguo; Jiang Xiaofeng; Lou Cheng

doi:10.11884/HPLPB202537.240416

Volume 37 Issue 4

Mar. 2025

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Yao Weibo, Wei Hao, Yang Sen, et al. Analysis of self-breakdown characteristics of air-insulated gas switch at different environmental temperature[J]. High Power Laser and Particle Beams, 2025, 37: 045002. doi: 10.11884/HPLPB202537.240416

Citation:

Yao Weibo, Wei Hao, Yang Sen, et al. Analysis of self-breakdown characteristics of air-insulated gas switch at different environmental temperature[J]. High Power Laser and Particle Beams, 2025, 37: 045002. doi: 10.11884/HPLPB202537.240416

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Analysis of self-breakdown characteristics of air-insulated gas switch at different environmental temperature

doi: 10.11884/HPLPB202537.240416

National Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi’an 710024, China

Received Date: 2024-12-07
Accepted Date: 2025-02-15
Rev Recd Date: 2025-02-15

Available Online: 2025-04-01

Publish Date: 2025-04-15

Abstract

Abstract

The study on the self-breakdown characteristics of air-insulated gas switches at different environmental temperatures can improve the adaptability of pulsed power devices, especially in the fields of shale oil and gas resource exploitation. By establishing a research platform for the high-temperature performance study of coaxial gas switches, the self-breakdown voltage distribution of gas switches at different temperatures was experimentally studied. The main factors and laws of temperature on the self-breakdown discharge process were analyzed in combination with Townsend discharge theory. The results show that, the main factors affecting the self-breakdown voltage are the density of the air and the distance of the switch at different temperatures. For cavity-exchangeable gas switches, the self-breakdown voltage decreases with the increase of temperature. However, with the increase of environmental temperature, the high-temperature particles sprayed during the ablation process of the electrode cause molecular pyrolysis and gas adsorption on the surface of the insulating material, as well as the chemical reaction of gas molecules in the process of high-current discharge, resulting in obvious changes in the composition of the gas and the reduction of the stability of the switch discharge. The research results in this paper can provide a technical reference for the reliable operation of gas switches in high-temperature environments.
- gas switch,
- self-breakdown characteristics,
- high temperature environment,
- high temperature insulating material

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References(23)

References

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