高压电器2017，Vol.53Issue(3)：190-196,7.DOI:10.13296/j.1001-1609.hva.2017.03.030
固体绝缘开关设备大容量真空开断过程中触头屏蔽罩侧烧问题探析
Study on the Transverse Burning Action to Contact Shield During High-current Vacuum Interruptions in a Solid Insulated Switchgear
孔国威 1魏杰 1梁吉省 1王昊晴 2李向阳2
作者信息
- 1. 北京双杰电气股份有限公司,北京100085
- 2. 中国电力科学研究院,北京100192
- 折叠
摘要
Abstract
Presently,the two main development directions of solid insulated switchgear(SIS) are small-size and large-capacity.However,the miniaturization of SIS has restriction on the distance between the internal bus and the vacuum interrupter (Ⅵ).This will not only affect the electrical insulation and partial discharge characteristics of the SIS,but also will affect the current breaking capacity of the SIS.With the transverse magnetic blowing action generated by pass bus conductor,the vacuum arc in a Ⅵ blows to burn the shield side and reduce the Ⅵ's withstand voltage level,which has a serious impact on current breaking capacity.In order to improve the breaking capacity of a miniaturization SIS,the purpose of this paper is to study the transverse magnetic blowing action in a SIS,to calculate the electmdynamic force affected by pass bus conductor,and to simulate the magnetic field distribution between contact gaps generated by pass bus conductor.Lastly,a magnetic shielding solutions for the transverse magnetic blowing action is given,which has passed the test verification.The results showed that a magnetic shield in a vacuum interrupter of SIS is a powerful solution to reduce the arc motion affected by bus conductor electrodynamic force,and then to solve the arc transverse blowing action to contact shield in a high-current vacuum interruption.关键词
固体柜/真空灭弧室/电动力/触头屏蔽罩Key words
solid insulated switchgear(SIS)/vacuum interrupter(Ⅵ)/electrodynamic force/contact shield引用本文复制引用
孔国威,魏杰,梁吉省,王昊晴,李向阳..固体绝缘开关设备大容量真空开断过程中触头屏蔽罩侧烧问题探析[J].高压电器,2017,53(3):190-196,7.
