Research on the Integrated Distribution Transformer with Vacuum Circuit Breaker

Transformer is the most important component of power transmission and distribution system. An integrated distribution transformer is developed in this paper, which is suitable for harsh environments. Vacuum circuit breaker is adopted as the high-voltage switch of the transformer. In order to improve the protection ability and operation reliability of the transformer, vacuum circuit breaker and transformer body are encapsulated in the oil tank together. The transformer internal structure is optimized. The electric field and the temperature field inside the transformer are simulated and analyzed, so as to obtain the reasonable insulation and heat dissipation design.