摘要
利用商用CFD软件FLUENT,针对一台强迫油循环冷却的油浸式变压器内部温度分布与热点温升进行了数值模拟,重点研究分析了不同进出口位置、进口速度和内置导向结构对冷却效果的影响。研究结果表明,变压器冷却油进出口位置的设置对油的流动影响很大,合理的进出口位置有助于减少油的使用量,提高冷却效果。对于给定的变压器模型,存在最佳的进口速度,以及相应的变压器所需冷却油流量。强迫导向油循环冷却方式可强迫油在绕组中迂回导向,提高冷却效果。挡板个数与设置位置对冷却效果影响明显,在实际设计中需要合理设置挡板数和挡板位置。
The commercial CFD software FLUENT was used to simulate and calculate the internal temperature distribution and hot temperature of oil-immersed transformer with forced-directed oil cooling system. It aims to know the cooling effect for different inlet and outlet location, different inlet velocity and oriented structure. The results show that the inlet and outlet location of the transformer cooling oil set a great influence on the oil flow. Reasonable inlet and outlet location will reduce the oil flow and improve the cooling effect. For a given transformer model, there exists the optimal inlet speed, and oil flow rate. Forced-directed oil cooling system can force the oil circulat- ing along a fixed direction in the winding circuitous, improving the cooling effect. The number and location of the plates affects the cooling effect . Reasonable plate number and location should be set during designing.
出处
《电力科学与工程》
2012年第10期47-52,共6页
Electric Power Science and Engineering
关键词
变压器
强迫油导向循环
数值模拟
温度场分布
transformer
forced-directed oil cooling
numerical simulation
temperature field
