Silicone Grease for Outdoor Gas-insulated Switchgear (GIS) Application

2018 International Conference on Smart Materials Applications

Song, Liang^1 ; Ying, Feng^2 ; Zhang, Hui^1 ; Liu, Yixi^2

Corporate Research Center, ABB (China) Limited, BEZIT, Jiuxianqiaobei Road, no.10, Chaoyang District, Beijing, China^1

ABB High Voltage Switchgear (Xiamen) Co., Ltd, Guanghui Building, 6# Chuang Xin 3rd Road, Xiamen S.E.Z Fujian, China^2

关键词: Flange connection;    Gas insulated switchgear(GIS);    GIS application;    SF6 gas;    Silicone grease;    Temperature resistances;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/422/1/012025/pdf
DOI  :  10.1088/1757-899X/422/1/012025

来源: IOP

【 摘 要 】

Silicone grease are widely applied in flange connections of gas-insulated switchgear (GIS) providing protection against flange and sealing O-ring corrosion and subsequent SF6 gas leakage. During GIS operation, grease bleeding phenomenon was frequently observed, which not only result in a poor appearance of flange surface but a potential SF6 leakage in the long-term application. In this paper, the possible reasons for this phenomenon is briefly discussed. In addition, the key parameters and outdoor performance of several commercial grease products were verified for a better understanding of its temperature resistance. It is shown that some grease products can have a better control on bleeding performance and should be more suitable for the outdoor GIS application.