摘要详情

ID / 提交时间

212 / 2024-04-17 17:26:13

标题

Research on the electron density diagnosis of gas arc zero-zone

关键字

gas circuit breaker,arc discharge,interferometry,electron density

主题及专题

7)Fundamental physics in Switchgear

状态

摘要录用

作者

Ke Wang / Electric Power Research Institute of Yunnan Power Grid Co., Ltd.

Dongxu Zhao / Xi'an Jiaotong University

Junwei Deng / Xi 'an Jiaotong University

Boya Zhang / Xi'an Jiaotong University

Xingwen Li / Xi'an Jiaotong University

摘要

During the circuit breaker breaking process, the behavior of the zero-zone arc is one of the key factors to determine the success of the gas circuit breaker breaking. Passive optical diagnostics can provide crucial microscopic information about the arc zero-zone. In this paper, different media zero-zone arc interference fringes are obtained by dual-wavelength laser interferometry, and the evolution of back-arc electron density is obtained through phase difference inversion. Compared with the decay rates of electron surface density in different arc extinguishing media, the results show that Air<CO₂<SF₆, which is consistent with the excellent arc extinguishing performance of SF₆ in practical engineering applications. By exploring the comprehensive control mechanism of gas arc back-arc decay process under different factors, this study provides a theoretical basis for the development of new circuit breakers.