水轮发电机定子三维温度场的有限元计算

摘要

建立水轮发电机定子三维温度场计算的数学模型和泛函，用有限元法对水轮发电机定子1/2轴向长度的三维温度场进行求解，得到任意一个截面及沿轴向方向的温度分布曲线。对一台320MW的水轮发电机进行计算，结果表明，定子最高温度值与实测值基本相符。%The mathematical model and functional of 3D temperature field of hydroelectric generator stator are derived.Using the finiteelement method,the 3D temperature field for half-axial length of stator are solved.Finally,the axial temperature distribution for arbitrary section of a 320MW generator is obtained,which is in accordance with testing values.