在 Suter全性能曲线的基础上 ,将可逆式水泵水轮机的全特性曲线表示为以相对流动角x和导叶开度 y为自变量的曲面函数 ,用矩形域最小二乘曲面拟合数学模型和计算机仿真拟合曲面方程 ,并提出了实用可靠的曲面分层拟合方法计算任一导叶开度和相对流动角下的WH(x、y)和 WB(x、y)值 ,为抽水蓄能电站过渡过程计算提供了一种新的全特性曲线处理方法。 Based on the Suter full performance curve, the full characteristic curve of the reversible pump turbine is expressed as the surface function with the relative flow angle x and the guide vane opening y as independent variables, and the rectangular model least squares curve fitting mathematical model and Computer simulation fitting curve equation, and put forward a practical and reliable surface layer fitting method to calculate the WH (x, y) and WB (x, y) value at any one of the guide vane opening and relative flow angle, Able to calculate the transition process of power plant provides a new method of full characteristic curve processing.