高压电器2018，Vol.54Issue(1)：143-151,157,10.DOI:10.13296/j.1001-1609.hva.2018.01.021
变压器油纸绝缘水分含量和老化程度定量评估研究
Quantitative Evaluation Research on Moisture Content and Aging State of Transformer Oil-paper Insulation
曹建军 1隋彬 1杨飞豹 2尹小兵3
作者信息
- 1. 雅砻江流域水电开发有限公司,成都610051
- 2. 西南交通大学电气工程学院,成都610031
- 3. 四川电力设计咨询有限责任公司,成都610041
- 折叠
摘要
Abstract
In order to distinguish the influence of aging state and moisture on frequency domain spectroscopy and improve the accuracy of assessing aging state and moisture content of oil-paper insulation,in this paper,through conducting accelerated thermal aging experiment,five groups of oil-paper insulation samples with different aging state and moisture content are prepared,and then the tanδ spectrum for each group of specimens is performed test.The testing results show that in the bands of 10-3～10-1 Hz,the tanδ value increases with aging degree,while in the band of 10-3～102 Hz,the tanδ value significantly increases with moisture content,obtains the integral value of Sm and SDP to tanδ curve in feature band of 10-1～102 Hz and 10-3～10-1 Hz as characteristic parameters to assess moisture content and aging state,and establishes quantitative relationship among characteristic parameters moisture content (Kw) and degree of polymerization (DP).Through comparing and analyzing the dielectric loss spectrum,the result show that the moisture content in insulating paper had great influence on characteristic parameters SDP.Therefore,in this paper proposes moisture compensation factor to quantitatively analyze the influence of the moisture content to aging assessment,and further puts forward the new method to assess the aging state of oil-paper insulation which comprehensively considering the influence of moisture content in insulating paper.关键词
频域介电谱/油纸绝缘/水分含量/老化程度/特征量/水分补偿因子Key words
FDS/oil-paper insulation/moisture content/aging state/feature quantity/moisture compensation factor引用本文复制引用
曹建军,隋彬,杨飞豹,尹小兵..变压器油纸绝缘水分含量和老化程度定量评估研究[J].高压电器,2018,54(1):143-151,157,10.
