变频调速给水泵站效率最优控制策略  

Efficiency optimization control for water-supply pumping stations driven by frequency converter

作　　者：张承慧[1] 李洪斌[2] 廖莉[1] 程兆林[3] 

机构地区：[1]山东大学控制科学与工程学院,山东济南250061 [2]阿尔伯特大学电气工程系 [3]山东大学数学与系统科学学院,山东济南250100

出　　处：《控制理论与应用》2004年第3期470-474,共5页Control Theory & Applications

基　　金：国家863计划课题项目(2002AA412130);山东省自然科学基金项目(Y2001G01);山东省优秀中青年科学家基金项目(02BS020).

摘　　要：提出一种符合水泵并联运行特性的最小流量偏差效率优化模型,克服了CohenG.模型的不足.针对水泵高效区约束条件的复杂性,给出了简化高效区约束条件,明显缩短了优化求解时间,而求解精度基本不受影响.采用0 1完全枚举和Wolfe既约梯度等算法求解模型,得到满意的控制策略.实验结果证实了优化模型的有效性,实际应用效果良好.To remedy the defects of the flow difference model proposed by Cohen G.,an improved model is presented on flow difference minimization which satisfies the parallel characteristics of pumping stations.The simplified constraints are proposed to solve the solution complexity of precise constraints of high-efficiency operational areas to reduce the solution time greatly and maintain the precision.The 01 enumeration and Wolfe reduced gradient method was used to solve the model.It can obtain the satisfying control strategy.A lot of experimental results illuminated the validity of the optimization model.Some research fruits have been applied to real engineering with good performance.

关 键 词：优化调度 变频调速 最优控制 给水泵站 

分 类 号：TM921.5[电气工程—电力电子与电力传动]