Pressure and Arc Voltage Measurement in a 252 kV SF_6 Puffer Circuit Breaker  

作　　者：钟建英 郭煜敬 张豪 

机构地区：[1]R&D Center,Pinggao Group Co.,Ltd

出　　处：《Plasma Science and Technology》2016年第5期490-493,共4页等离子体科学和技术（英文版）

摘　　要：The pressure distribution in an arcing chamber is critically important for the SF6 puffer circuit breaker design. In this paper, the pressure variation of four locations in the nozzle was measured by piezoresistive and fiber optical pressure sensors at two current levels of 10 kA and 50 kA. An arc voltage measurement was also taken. The results demonstrate that using either type of sensor with a connecting tube is able to detect the fast pressure variation in circuit breakers, however the possible distortion and delay to the pressure transient caused by the tube need further study.The pressure distribution in an arcing chamber is critically important for the SF6 puffer circuit breaker design. In this paper, the pressure variation of four locations in the nozzle was measured by piezoresistive and fiber optical pressure sensors at two current levels of 10 kA and 50 kA. An arc voltage measurement was also taken. The results demonstrate that using either type of sensor with a connecting tube is able to detect the fast pressure variation in circuit breakers, however the possible distortion and delay to the pressure transient caused by the tube need further study.

关 键 词：piezoresistive pressure sensor fiber optical pressure sensor puffer high voltagecircuit breaker PRESSURE Pitot tube arc voltage 

分 类 号：TM561[电气工程—电器] TP212[自动化与计算机技术—检测技术与自动化装置]