中国电机工程学报2017，Vol.37Issue(10)：3037-3044,8.DOI:10.13334/j.0258-8013.pcsee.160959
温度、水分、老化对变压器油中糠醛及绝缘纸老化评估的影响和修正
Effects and Correction of Temperature, Moisture and Aging on Furfural Content in Insulating Oil and Aging Assessment of Insulation Paper
摘要
Abstract
In order to correct the effects of temperature,moisture and aging on furfural content in oil and aging assessment of insulation paper for power transformers,accelerated thermal aging,moisture absorption and furfural equilibrium experiments were conducted in this paper.Totally 60 groups of oil-paper samples combining 3 temperatures,4 aging degrees and 5 moisture contents were obtained.Furfurai contents in oil and paper were measured and furfural partitioning ratios in oil-paper system were calculated.The quantitative model of furfural partitioning was constructed.Results show that furfural partitioning will be affected by operation temperature,moisture content,and aging of oil-paper insulation system,leading to the change of furfural content in oil.Mass fraction of furfural in oil has positive correlations with temperature and moisture,and a negative correlation with degree of polymerization (Dp) of paper.The Dp-furfural equation was established and the furfural partitioning model was introduced.Results show that the model can effectively correct the interference of furfural partitioning on aging assessment of insulation paper,and improve the accuracy of aging assessment.关键词
糠醛/油纸绝缘/老化评估/变压器/聚合度Key words
Furfural/oil-paper insulation/aging assessment/transformer/degree of polymerization分类
信息技术与安全科学引用本文复制引用
廖瑞金,林元棣,杨丽君,赵学童..温度、水分、老化对变压器油中糠醛及绝缘纸老化评估的影响和修正[J].中国电机工程学报,2017,37(10):3037-3044,8.基金项目
国家自然科学基金创新研究群体科学基金(51321063).Project supported by the Foundation for Innovative Research Groups of the National Natural Science Foundation of China(51321063). （51321063）
