摘要
Abstract
In the period of Oil paper aging,moisture and temperature would have an important impact on the distribu-tion of the internal charge. To the influence of moisture and temperature, applying AC voltage to the samples, the change of conductivity,dielectric constant,dielectric loss factor were got and selecting the features,the relationship between frequency parameters and electronic charges was also got, it provides a new method to determine the insulation level. The results show that under the effect of composite voltage,oil charge distribution would concentrate with the increasing of water content,the transfer speed would accelerate with temperature increasing. Increasing of the moisture and temperature,the frequency domain parameters would have a significant impact and the effects on the conductivity are most obvious. At the temperature of 30,water content of 10×10-6,20×10-6,30×10-6,40×10-6 and 50×10-6 were extracted as the characteristic parameter,obtaining the relationship between frequency parameters and charge distribution to draw the charge distribution to the system of oil paper insulation aging effect. It provides a new idea for the further research of the determination method for the aging of oil-paper insulation.关键词
水分/绝缘纸/电场/分布Key words
moisture/insulation paper/electric field/distribution分类
信息技术与安全科学
