Abstract：This paper reviews the research status of the power transformer insulation aging, and analyzes the influencing factors of transformer insulation aging. The thermal aging characteristic products and the law in transformer oil-paper insulation system are analyzed. And the impact of moisture on thermal aging of transformer oil-paper insulation is emphasized in this paper. The physical, chemical and electrical characteristic features of oil-paper insulation thermal aging are summarized respectively. The mechanisms of broken chains in cellulose are explored emphatically from the microstructure and molecular dynamics simulation, thus various factors on the influence of the insulation thermal aging can be researched. Finally, the future research areas of insulation thermal aging in power transformers are proposed.
廖瑞金, 杨丽君, 郑含博, 汪可, 马志钦. 电力变压器油纸绝缘热老化研究综述[J]. 电工技术学报, 2012, 27(5): 1-12.
Liao Ruijin, Yang Lijun, Zheng Hanbo, Wang Ke, Ma Zhiqin. Reviews on Oil-Paper Insulation Thermal Aging in Power Transformers. Transactions of China Electrotechnical Society, 2012, 27(5): 1-12.
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