广东电力2017，Vol.30Issue(6)：103-109,7.DOI:10.3969/j.issn.1007-290X.2017.06.021
4种典型交流滤波器断路器灭弧室电场分析
Analysis on Electric Field in Arc Extinguish Chambers of Four Typical AC Filter Circuit Breakers
摘要
Abstract
Insufficiency of internal insulation is one of reasons for causing explosion of the AC filter (ACF) circuit breaker at convertor station, thus, this paper makes simulation research on distribution of electric field in the arc extinguish chamber of typical ACF circuit breaker. Firstly based on electric field numerical analysis theory, it adopts Solidworkds and ANSYS software to establish 3D numerical simulation models for four typical 550 kV ACF circuit breakers. Then, it analyzes impact of mesh generation size of the arc contactor on calculation result of electric field in the arc extinguish chamber by simulation. On the basis of comparison of simulating data, it analyzes distribution of electric field and uniformity coefficient in the arc extinguish chamber in interruption process of the ACF circuit breaker after its arc blowout as well as assesses relative insulation intensity in the arc extinguish chamber. Finally, it makes analysis on impact of arc time and average interruption speed on electric field and preliminarily proposes optimization measures. Simulation analysis results indicate that mesh generation size of the arc contactor is tolerable to be 0.2~0.5 mm, distribution of electric field in arc extinguish chambers of the four typical ACF circuit breakers is a kind of slightly non-uniform field that can satisfy requirement for insulation margin in case of normal interruption. In addition, it is able to reduce the maximum field intensity of each assembly unit of the arc extinguish chamber and improve insulation margin by increasing arc time and average interruption speed.关键词
交流滤波器/断路器/有限元法/电场/网格剖分Key words
AC filter/circuit breaker/finite element method/electric field/mesh generation分类
信息技术与安全科学引用本文复制引用
李歆蔚,厉天威,王程嘉,唐力,韩永霞,戴栋,罗兵,李立浧..4种典型交流滤波器断路器灭弧室电场分析[J].广东电力,2017,30(6):103-109,7.基金项目
广东省自然科学基金资助项目(2014A030313249) （2014A030313249）
