户内变电站通风性能的CFD数值模拟分析(英文)

The CFD Numerical Simulation on Ventilation of Indoor Transformer Substation

探讨了造成重庆市区居民断电的可能原因是由于户内变电站主变压器发热量过大的问题。为了解决户内变电站的通风换热问题,建立了用于CFD分析的数值计算模型,并利用专业的流体分析软件Fluent进行了三维CFD仿真模拟分析。在保证进风口和出风口面积不变的情况下,通过改变进风口和出风口的大小和位置分布,获得了最佳的进风口和出风口位置,有效地降低了主变压器的温度,提高了户内变电站的热交换率,为以后户内变电站的设计提供了参考。

This article examines the possible cause of power-off in Chongqing resulting from the o-verheating of the main transformer in summer,discusses a CFD （Computational Fluid Dynam-ics）numerical model of the main transformer,and analyzes the results with FLUENT software. The optimum heat dissipation effect is produced and the optimum layout of the air inlet and outlet are obtained by changing the positions of the air inlet and outlet.Such layout not only optimizes the ventilation and thermal dissipation of the transformer substation and reduces reconstruction cost but also guides the construction of the substation.