电工技术学报2009，Vol.24Issue(8)：27-33,7.
变压器油纸绝缘热老化特性及特征量研究
Investigation on Properties and Characteristics of Oil-Paper Insulation in Transformer During Thermal Degradation Process
摘要
Abstract
In this paper, accelerated thermal aging test for four types of oil-paper samples are performed at three temperatures of 90℃, 110℃and 130℃. The samples are composed of conventional 25~# mineral oil, BIOTEMP oil (which represents a kind of vegetable oil), ordinary Kraft paper and thermally-upgraded paper. The research on changing laws of degree polymerization (DP) of paper and aging properties of oil-paper are performed, and two characteristic parameters, furfural concentration and water content in oil, and also their relationships with DP are analyzed in this paper. The main purpose of this research is to investigate the aging properties of new material insulations and supply references for applying the current aging characteristics and diagnostic techniques to the new composite insulation and lay the basis for developing the lifetime prediction theory of power transformers.关键词
油纸绝缘/热老化特性/聚合度/老化特征量/绝缘诊断Key words
Oil-paper insulation/ thermal aging properties/ degree polymerization (DP)/ aging characteristics parameters/ insulation diagnosis分类
信息技术与安全科学引用本文复制引用
杨丽君,廖瑞金,孙会刚,孙才新,向彬..变压器油纸绝缘热老化特性及特征量研究[J].电工技术学报,2009,24(8):27-33,7.基金项目
国家杰出青年科学基金资助项目(50425722),北京ABB集团研究中心合作项目. （50425722）
