摘要
通过有限元法对典型结构干式变压器内部温度场的计算,确定了干式变压器平均温升换热系数准则方程式,提出了一种计算线圈平均温升的方法,利用该方法将绕组平均温升的计算结果与试验值进行了比较,精度有了很大提高,为干式变压器平均温升的计算提供了新的途径。
By solving the temperature distribution in dry-type power transformers with finite element method,the form of characteristic number equation for the heat-transfer coefficient is established.A method to calculate the average temperature rising is proposed.The comparison between the calculated results and measured results shows the agreement.The study provides a feasible way to determine the average temperature rising in dry-type power transformer.
出处
《电力科学与工程》
2011年第10期42-44,共3页
Electric Power Science and Engineering
关键词
干式变压器
平均温升
相似理论
有限元
dry-type power transformer
average temperature rising
similarity theory
FEM
