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Abstract
In the paper, the electric field change in transformer oil and oil-impregnated insulation paperboard within wide temperature range (20°C~100°C) was studied. The influence law of temperature on oil-paper insulation electric fields was summarized. Oil-paper insulation electric field distribution under the action of different wave-form voltages was simulated for analysis. The electric field distribution condition during moisture balance steady state and transient state was obtained. The reasons of electric field distribution change were analyzed.
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Details
1 State Grid Heilongjiang Electric Power Company Limited Electric Power Research Institute, Harbin, Heilongjiang, 150030, China
2 State Grid Heilongjiang Electric Power Company Limited, Harbin, Heilongjiang, 150090, China