水轮机导水叶折线关闭规律的优化计算

Optimal calculation of broken-line closure of guide blade in water turbine

用最优化技术中的单纯型加速法对水轮机导水叶（两段及三段）折线关闭规律进行优化计算，计算结果与直线关闭规律相比可取得明显的优化效果。并就目标函数形式对优化结果的影响进行了分析和研究，提出了一种较理想的目标函数形式，按此目标函数形式求得的折线关闭规律可将水击的最大值控制在事先给定的允许值附近，从而使优化计算的结果具有事先可控的成份。

The broken-line closure laws of turbine guide blade have been calculated by the simple-type accelarationmethod of the optimization technology. The such optimization effectiveness could be more obvious than that fromstraight-line closure laws. The impact of objective function on optimization result has been analyzed and studied anda more ideal objective function has been put forward. The broken-line closure laws gained by this objective functioncould control the maximum value of water hammer to be in the prior given ranges. There fore, the optimal calculation results have the composition of pre-control functions.