A HFID-based Online Testing Technique for Internal Pressure of Vacuum Breaker
The internal gas pressure of vacuum breaker(VCB)is a main influencing factor which effects on the VCBs electric properties.The decaying gas pressure in arc chamber will not only cause the supply voltage to be beyond the VCBs endurance,but also very difficult to cut off the fault current effectively.With the decline of the arc chambers vacuum degree,because of the arc quenching performance deterioration,the partial discharge phenomena will occur between the contact and arcing cover,and the discharge high-frequency impulses will be formed.By capturing these impulses,we can detect indirectly the shield potential of the arc chamber,so as to understand the arc chambers vacuum degree accurately.Because the non-contact electric field receiving antenna is adopted as the detecting element,so we detect the vacuum degree without cutting off the power supply,reaching the purpose of the VCB online detection.
High-frequency impulse detecting Vacuum breaker Vacuum pressure Arc chamber Partial discharge
Liu Shuguang Guo Qian Wu Xuexing
School of Electronic and Information Eng.,Xian Polytechnic University,Xian 710048,China;Anhui Dorj School of Electronic and Information Eng.,Xian Polytechnic University,Xian 710048,China Anhui Dorje Electric Co.Ltd.,Huangshan 245000,China
国际会议
长沙
英文
1764-1767
2014-05-31（万方平台首次上网日期，不代表论文的发表时间）