用多参数研究变压器油的热老化

Study on Thermal Aging of Transformer Oil by Multiparameter

以常用的老化参数（介质损耗因数、酸值、电导率、表面张力）和油流带电电荷密度这个新参数研究变压器油的热老化。试验结果表明，这些参数与油的热老化程度有很大的关系。而且油流带电电荷密度与介质损耗因数和电导率有一定的相关性。

In the paper,the ordinary ageing parameter, such as dielectric loss factor, acid number, conductivity, interfacial tension and the charge density of oil streaming electrification are used to study the thermal aging of transformer oil. The experimental results show that there is a close relationship between these parameters and the degree of thermal aging. And the charge density of oil streaming electrification is related to the dielectric loss factor and conductivity.