40.5kV大电流油纸电容式变压器套管内部运行压力分析

Analysis on Internal Pressure of 40.5kV High-current Oil-impregnated Paper Condenser Bushing in Operation Transformer

通过对套管呼吸腔内运行压力的一般性计算,指出了影响套管内部运行压力升高的几个关键因素,从设计、制造和使用角度提出了一些降低套管内部运行压力的方法,这些方法,对提高套管运行的安全可靠性有重要意义。

Based on general calculation of pressure in breathing cavity of bushing in service, the key aspects effecting increase of inner pressure of bushing in service. Some measures for lowering the inner pressure are proposed from points of view of design, manufacture and service. Result shows it is very important for enhancement of service reliability of bushing.