Heat Transfer Performance Analysis of End Structures of Large Synchronous Condenser Based on Deep Forest Prediction Model

Abstract

This paper presents a three-dimensional fluid-solid coupling heat transfer model of the end domain of a synchronous condenser. The temperature of the end structures and the flow distribution of the cooling medium were analysed. The highest temperature point of the structural part was explored, and the influence rule of the properties of the cooling medium on the temperature of the end structures of the condenser were analysed in detail. Based on the deep forest prediction model (DFPM), an accurate prediction of the temperature of the copper shield, far finger plates, clamping plate and stator end winding insulation was obtained by selecting a cooling medium and a heat-conducting medium with different properties. Comparing the predicted temperature data of the end structural parts with the finite element simulation results, the difference is minor. In addition, by measuring the temperature of the inner edge of the copper shield, the simulation results are in agreement with the measurement results, confirming the accuracy of the proposed model. The presented model can replace the complex simulation and can be considered an interesting reference for selecting the cooling scheme.