摘要
10 k V、35 k V金属封闭式开关柜在变电站广泛使用,其运行安全直接影响整个变电站的供电可靠性。开关柜内的绝缘缺陷或劣化、接触不良等都会成为威胁其安全稳定运行的隐患,而通常这些隐患在设备运行、例行试验条件下不容易被发现。介绍暂态对地电压与特高频技术,通过同时运用两种技术,成功检测出一起35 k V开关柜缺陷案例。
Metal-enclosed 10 k V and 35 k V switchgears are widely used, the operating security of which directly affects reliability of substations. Defects such as insulation degradation and poor contact are difficult to be detected under the normal operating and routine tests. Test technologies of transient earth voltage(TEV) and ultra-high frequency(UHF) are introduced.In a case of 35 k V switchgear, two technologies are applied, and the defect is discovered successfully.
出处
《山东电力技术》
2016年第2期78-80,共3页
Shandong Electric Power
关键词
开关柜
局部放电
暂态对地电压
特高频
switchgear
partial discharge
transient earth voltage
ultra-high frequency
作者简介
岳彩鹏(1984),男,工程师,从事高压试验检修工作:
候宪法(1974),男.工程师、技师,从事高压试验检修工作
董亚(1977),女,技师.从事高压试验检修工作。