The Research And Analysis On Evaporative Cooling Transformer Windings Temperature Field And Flow Field

Transformer is an important device in power transmission and distribution system, The development of the electricity industry proposed the requirement of the huge capacity and Miniaturization for the transformer.The contents of this article studied the evaporative-cooling transformer using a phase change heat transfer. Using the phase-change refrigerant low boiling point, large latent heat, more heat absorption characteristics, can make the transformer volume reduced, increasing capacity to meet the requirements of miniaturization and large capacity demand.This paper studies the evaporative cooling transformer operating characteristics, on the bases of analysis evaporative boiling mechanism, as well as vapor-liquid two-phase flow characteristics. Solved the refrigerant flow, and studied the refrigerant working process. The calculation of evaporative cooling transformer winding temperature field is analyzed. Established mathematical, physical model, and proposed calculation method. And based on the above mathematical model and calculation method to write computer program. Under different conditions such as horizontal flow channel dimensions, vertical flow channel dimensions, inlet temperatures used the calculation software to calculate the cooling media work flow, the temperature distribution of windings, and the refrigerant flow distribution parameters. Obtained and analyzed the effect law and incidence relation between them.In this paper, using the CFD software to simulate, compared the CFD simulation results and self written software calculated results, two results are in good agreement, verified the correctness of the mathematical model and computational software established in this paper...