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- W2364795931 abstract "To research the further thermal aging of transformer oil-paper insulation by organic acid catalysis, we prepared some insulation paper samples with 0.4% initial moisture content and different kinds of acidic insulation oil solution samples in the experiment, and investigated dissolution and distribution characteristics of acid in oil-paper insulation system at home temperature(25 ℃) and 90 ℃. Then, we accelerated thermal aging of the oil-paper sample at 90 ℃, and measured degree of polymerization of insulation paper and polarization and depolarization current of the oil-paper sample at different aging steps. Experimental results show that formic can be easily absorbed by paper while stearic can be easily dissolved in oil and formic can let moisture diffuse to oil from paper. Compared to stearic, formic accelerates the degradation rate of insulation paper obviously, and the shift-up influence of formic on polarization and depolarization current is more remarkable. The acid catalysis on further thermal aging of transformer oil-paper insulation will be obvious when the formic content reaches 0.1×10-3 and stearic content reaches 0.3×10-3. The influence of the acid with low molecular and strongly polar on the thermal aging of oil-paper insulation should be particularly concerned in actual analysis." @default.
- W2364795931 created "2016-06-24" @default.
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- W2364795931 date "2015-01-01" @default.
- W2364795931 modified "2023-09-23" @default.
- W2364795931 title "Experimental Study on Further Thermal Aging of Transformer Oil-paper Insulation by Organic Acid Catalysis" @default.
- W2364795931 hasPublicationYear "2015" @default.
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