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SF6断路器动触头排气孔位置及电弧的热效应对灭弧室压力特性影响的研究
Investigation of Exhausting Gas Hole Position in Moving Contact and Arc Heat Effects on Pressure Characteristic for SF6 Circuit Breaker
【摘要】 建立了计算SF6断路器灭弧室压力特性的数学模型。利用它对国产OFPI—220型SF6断路器进行的计算结果表明,改变动触头排气孔位置及电弧对动触头内腔中气体的热效应可明显提高开断电流时灭弧室压力上升速度。
【Abstract】 Based on the calculations of the OFPI-220 circuit breaker a math model to compute the pressure characteristic in the arc-extinguishing chamber of the SF6 circuit breaker is derived. The results show that the position of the exhausting gas hole and the arc heat effects on the gas inside the hollow moving contact have obviously raised the pressure rising speed.
【关键词】 六氟化硫断路器;
排气系统;
灭弧室;
压力;
特性;
【Key words】 SF6 circuit breaker; exhausting gas system; arc-extinguishing chamber; pressure; characteristic;
【Key words】 SF6 circuit breaker; exhausting gas system; arc-extinguishing chamber; pressure; characteristic;
【基金】 国家自然科学基金资助项目
- 【文献出处】 高压电器 ,High Voltage Apparatus , 编辑部邮箱 ,1996年03期
- 【分类号】TM561
- 【下载频次】92