Open AccessExperimental and simulation analysis of the influence of moisture on dielectric and breakdown properties of insulation pressboard used in power transformer
Author(s) -
Hao Wen,
Lin Cheng,
Yi Jiang,
Zhigang Zhao,
Wenyu Ye,
Jian Hao
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1678/1/012047
Subject(s) - dielectric , pressboard , materials science , cellulose , water content , composite material , moisture , dielectric spectroscopy , transformer , breakdown voltage , voltage , chemical engineering , electrical engineering , chemistry , optoelectronics , electrode , geotechnical engineering , electrochemistry , engineering
The influence of water molecules on cellulose has attracted much attention. The influence of water molecules on the dielectric property and breakdown property of cellulose requires in-depth research. In this paper, firstly, the effect of water on the dielectric spectrum in the frequency domain dielectric spectrum and the breakdown voltage of cellulose were studied. Then the parameters such as free volume, hydrogen bond, energy level and state density of cellulose under different moisture content were analysed by molecular simulation. The changes of dielectric properties and breakdown properties of cellulose under different water content were studied and summarized. The variation mechanism of dielectric property and breakdown property of different moisture content was explained by molecular simulation.