Investigation of Discharge Propagation in Localized High-Temperature SF6 Gas With Breakdown Voltage Measurement

被引：6

作者：

Kotsuji, Hideyuki ^{[1
,2
]}

Kuroda, Mami ^{[1
]}

Terada, Masanao ^{[1
]}

Shiraishi, Katsuhiko ^{[1
]}

Urai, Hajime ^{[3
]}

Yokomizu, Yasunobu ^{[2
]}

机构：

[1] Hitachi Ltd, Ibaraki 3191292, Japan

[2] Nagoya Univ, Dept Elect & Elect Engn, Nagoya 4578530, Japan

[3] Daido Univ, Dept Elect Engn, Nagoya 4648603, Japan

来源：

IEEE TRANSACTIONS ON PLASMA SCIENCE | 2023年 / 51卷 / 02期

关键词：

Arc; circuit breaker; critical electric field; dielectric breakdown; discharge progress; gas flow; hot gas; nozzle; SF6; HOT SF6;

D O I：

10.1109/TPS.2023.3238472

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

In high-voltage gas circuit breakers (HVCBs), high-pressure gas is blown between the electrodes to cool the arc. The temperature distribution between the electrodes at the current zero point has a large gas temperature difference. This study aims to experimentally clarify the effect of the cold gas region on the breakdown voltage of gases with large temperature differences. In an experiment, a hot gas generator using arc heat was used to create a gas space with a large temperature difference between electrodes, and the breakdown voltage was evaluated. The breakdown voltage in the gas space with a cold gas region was twice that of the case, where the space between the electrodes was filled with hot gas. It was found that the discharge initiated in the hot gas region was suppressed in the cold gas region and that the breakdown voltage in a gas space with the hot and cold region was influenced by the existence of the cold gas.

引用

页码：429 / 436

页数：8

共 15 条

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