风速对油浸式变压器绕组热点温度影响的研究

Study on Wind Speed Effect on the Windings Hot-spot Temperature of Oil-immersed Transformer

在实际工况中,油浸式变压器的散热过程会受到外界自然风变化情况的直接影响。通过Ansys有限元分析法,建立油浸式变压器在不同自然风速下绕组区域温度场与流场的二维流固耦合模型,分析绕组在不同外界自然风速下的热点温度变化,同时搭建变压器温升实验进行直接验证,结果证实了仿真模型的准确性。

In actual conditions,the change of external wind influences heat dissipation of the oil-immersed transformer.Making use of Ansys finite meta-analysis method to establish a 2D fluid-solid coupling model of the winding region temperature field and flow field of the oil-immersed transformer at various wind speeds was implemented to analyze the change of windings hot-spot temperature at different external natural winding speeds,and meanwhile,an experimental model for transformer temperature rise was built for direct verification of the accuracy of simulation model.