Liu Jiefeng, Cao Zhanwei, Fan Xianhao, Zhang Heng, Geng Chuhan, Zhang Yiyi
School of Electrical Engineering, Guangxi University, Nanning 530004, China.
Polymers (Basel). 2020 Nov 23;12(11):2760. doi: 10.3390/polym12112760.
The distribution behavior of furfural in insulation systems is influenced by the oil-pressboard mass ratio. In addition, the equilibrium distribution of furfural between oil and pressboard will be disturbed after oil replacement. Therefore, it is of great significance to study the distribution ratio of furfural in oil with various oil-pressboard mass ratios after oil replacement. In this research, an accelerated thermal aging experiment and oil replacement experiment were conducted in the lab. Furthermore, the equilibrium characteristics of furfural dissolved in oil with various oil-pressboard mass ratios were studied. Multiple regression analysis was used to analyze the relationship between the oil-pressboard mass ratios and the distribution ratio of furfural in oil. The equilibrium distribution model of furfural was thus obtained. Afterwards, the modified furfural distribution model under oil replacement conditions was established. A novel scheme is provided for analyzing the equilibrium characteristics of furfural under various oil-pressboard mass ratios after oil replacement. The work of this paper is expected to improve the accuracy of furfural analysis.
糠醛在绝缘系统中的分布行为受油与纸板质量比的影响。此外，换油后油与纸板之间糠醛的平衡分布会受到干扰。因此，研究换油后不同油与纸板质量比下糠醛在油中的分布比例具有重要意义。本研究在实验室进行了加速热老化试验和换油试验。此外，研究了不同油与纸板质量比下溶解在油中的糠醛的平衡特性。采用多元回归分析方法分析油与纸板质量比与糠醛在油中的分布比例之间的关系。由此得到了糠醛的平衡分布模型。之后，建立了换油条件下修正的糠醛分布模型。为分析换油后不同油与纸板质量比下糠醛的平衡特性提供了一种新方案。本文的工作有望提高糠醛分析的准确性。
