Analytical Study on Electron Avalanche in Two Different Temperature and Pressure Regions for High-temperature SF6 Gas

被引：2

作者：

Kuroda, Mami ^{[1
]}

Yokomizu, Yasunobu ^{[2
]}

Terada, Masanao ^{[1
]}

Kotsuji, Hideyuki ^{[1
]}

Shiraishi, Katsuhiko ^{[1
]}

Urai, Hajime ^{[3
]}

机构：

[1] Hitachi Ltd, R&D Grp, Ctr Innovat Energy, Hitachi, Ibaraki, Japan

[2] Nagoya Univ, Grad Sch Engn, Dept Elect Engn, Nagoya, Aichi, Japan

[3] Daido Univ, Dept Elect & Elect Engn, Nagoya, Aichi, Japan

来源：

2022 6TH INTERNATIONAL CONFERENCE ON ELECTRIC POWER EQUIPMENT - SWITCHING TECHNOLOGY (ICEPE-ST) | 2022年

关键词：

High-voltage circuit breaker; hot SF6 gas; electron avalanche; HOT SF6; BREAKDOWN;

D O I：

10.1109/ICEPE-ST51904.2022.9757123

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

High-voltage circuit breakers require a thorough understanding of the dielectric phenomena in the arcing region under non-uniform temperature and pressure conditions. As the first step towards reaching this understanding, we analyzed the development of electron avalanche using one-dimensional flow simulation considering 26 collisional reactions between electrons, ions, and neutral particles in a high-temperature/low-pressure region and a low-temperature/high-pressure region. The higher critical electric field in the latter region resulted in a lower possibility of electron avalanche development. The effect of electron avalanche in a gas area with largely different critical electric fields can be calculated by using the proposed analysis model for electron avalanche development.

引用

页码：108 / 111

页数：4

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