Effect of DC electric field on moisture migration characteristics in oil-pressboard
作者机构：State Key Laboratory of Alternate Electrical Power System with Renewable Energy SourcesNorth China Electric Power UniversityBeijingP.R.China State Grid Beijing Electric Power CompanyBeijingP.R.China China Electric Power Research InstituteBeijingP.R.China
出 版 物：《High Voltage》 (高电压（英文）)
年 卷 期：2021年第6卷第4期
页 面：647-654页
核心收录：
学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学]
基 金：National Natural Science Foundation of China,Grant/Award Number:U1866603 Science and Technology Project of SGCC,Grant/Award Number:GYB17201900228
主 题：moisture characteristics field
摘 要：The moisture content has a great influence on the electric insulation strength of ***,it is very important to assess the moisture content in power *** is lack of research about the effect of DC electric field on moisture ***,the authors analyse the moisture migration characteristics of oil-press-board under DC electric *** DC electric field has a greater influence on the moisture content in the *** with no DC electric field,the moisture content in oil is reduced by 22.91 mg/L at 50℃,while it is reduced by 17.63 mg/L at 70℃.Under the same moisture content in the oil,the moisture content in the pressboard which affected by the DC electric field is higher than the Oommen curve,the maximum dif-ference is 0.88%at 50℃,and 0.05%at 70℃.This result can provide a reference for the revision of existing moisture assessment methods.
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