Simulation of the Influences of the Pressure Ratio and Cu Vapour on SF6 Arc Characteristics

被引：0

作者：

张建 ^{[1
]}

贾申利 ^{[1
]}

李兴文 ^{[1
]}

史宗谦 ^{[1
]}

王立军 ^{[1
]}

机构：

[1] State Key Laboratory of Electrical Insulation and Power Equipment,Xi’an Jiaotong University

来源：

Plasma Science and Technology | 2009年 / 11卷 / 01期

关键词：

arc characteristics; supersonic nozzle; pressure; vapour;

D O I：

暂无

中图分类号：

TM561.3 [六氟化硫断路器];

学科分类号：

080801 ;

摘要：

The inlet and outlet pressure of the SFhigh voltage circuit-breaker nozzle are ofimportance in determining the thermal interruption capability of a breaker.Besides,electrodeevaporation is inevitable during the arcing process,which may affect the SFarc behaviour signif-icantly.In this study a numerical investigation on the arc characteristics of a supersonic nozzle iscarried out,by considering the influence of the pressure ratio between the inlet and outlet,and theCu vapour.It is demonstrated that a lower inlet pressure may result in a higher arc temperature,a lower arc voltage and a smaller mach number,and Cu vapour from electrode evaporation maycool the arc significantly.

引用

页码：52 / 56

页数：5

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