段大鹏,王彦卿,江阳,盛戈皞,李伟.SF6气体绝缘开关设备典型绝缘缺陷的局部放电发展规律及诊断方法研究[J].电测与仪表,2017,54(8):. duandapeng,Wang Yanqing,Jiang Yang,Sheng Gehao,Li Wei.PD Development Law and Diagnostic methods of Typical Insulation Defects in Gas-Insulated Switchgear[J].Electrical Measurement & Instrumentation,2017,54(8):.
SF6气体绝缘开关设备典型绝缘缺陷的局部放电发展规律及诊断方法研究
PD Development Law and Diagnostic methods of Typical Insulation Defects in Gas-Insulated Switchgear
In China, above of 110kv voltage class of the grid mainly adopts SF6 gas insulated switchgear ,especially the application of GIS equipment in the power grid is more and more widely. With the increase of voltage level and system capacity,SF6 switchgear equipment internal insulation faults in the power grid probability tend to rise, thus equipment defect and state judgment is one of the key problems to be solved. Aiming at this problem, this paper mainly studies the typical defects development mechanism in SF6 gas insulated switchgear and signal characteristics of different stages of development, focusing on detection methods of SF6 switchgear partial discharge based on the Ultra high frequency and Acoustic emission detection, and conduct some tests and researches about the typical defects discharge of GIS and the development process. In the last, the Characteristic spectrum Development Law and Diagnostic methods were proposed, a typical cases of GIS partial discharge are analyzed.
