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Analysis of Temperature Field for Ultra High Voltage Transformer Bushings

The temperature field of transformer bushings is one of the important problems to be considered in bushings design. It is of great significance to analyze the temperature field of casing for evaluating the operation state of bushings. In this paper, the heat loss of the bushings has been calculated based on the structure of 1000 kV oil paper capacitor bushings. And a simplified two-dimensional model of the UHV bushings was constructed. After setting reasonable boundary conditions, the temperature field of the two-dimensional model was calculated and analyzed. Finally, the temperature distribution diagram of UHV bushings was calculated by simulation, and the temperature distribution rule and its influencing factors also have been analyzed. The results can provide important references for the design and operation of UHV Transformer Bushings.