摘要
SF6气体绝缘开关装置 (GIS)中的隔离开关在操作时产生的快速暂态过电压 (VFTO) ,会造成 GIS的绝缘击穿事故。对 VFTO作用下的 GIS击穿特性进行了研究 ,同时通过光电检测的方法研究了雷电冲击和快速振荡冲击电压作用下的预放电特性。实验结果表明 ,由金属导电微粒所导致的绝缘子表面电荷积聚是造成
Insulation failure inside or outside GIS can be caused by very fast transient overvoltage (VFTO) generated during operating disconnectors in GIS. Hence, the breakdown characteristics of GIS stressed by VFTO are studied,and the photo\|electronic measurements are carried out to investigate the discharge behavior stressed by VFTO or LI. The test results show that the space charge accumulation produced by corona discharge of the metal particle on the spacer is the main reason causing the insulation failure of GIS.
出处
《电网技术》
EI
CSCD
北大核心
2000年第9期1-4,共4页
Power System Technology
基金
国家自然科学基金资助项目! ( 5980 70 0 6)
