Interrupter Pressure Measurement of a 252 kV SF6 Circuit Breaker
The transient pressure process, which determined the gas blasting in the interrupter of SF6 circuit breaker, have attracted the attention of designer and developer for long time. In this investigation, a onload SF6 interrupter pressure measurement method was established with piezoresistive pressure transducer and insulating-tube. The pressures in the puffer cylinder, at the upstream, throat and downstream of nozzle have been measured. The difference of gas blowing characteristics between N2 and SF6 has been pointed out. The insulating-tube can effectively protect the pressure transducer from the high voltage and high temperature during on-load interrupting. It was found that the arc process can cause high frequency oscillations to superimpose upon the pressure waveforms during on-load interrupting.
Yonggang Guan Weidong Liu Junhui Wu Wenyi Li
State Key Lab of Control and Simulation of Power Systems and Generation Equipments (Dept.of Electric Henan Pinggao Electric Co., LTD., Pingdingshan 467001, Henan Province, China
国际会议
西安
英文
160-163
2011-10-23（万方平台首次上网日期，不代表论文的发表时间）