中文摘要：

阐述了模型选择技术在泵站优化运行中研究的必要性，给出泵站优化运行模型选择系统的结构，采用两级模型字典库存储模型并通过构造搜索树建立模型选择推理机制，完善了模型选择的全过程和操作步骤，实现了泵站优化运行模型选择系统的设计开发，实例验证了该选择方法的有效可行性．

英文摘要：

The author describes the necessity of the model selection technique applied in the optimal operation of the pumping stations, and gives the structure of the model selection system. The deci- sion models are stored by establishing two-layer model dictionary databases. The reasoning mecha- nism is established by constructing the search trees for model selection. The complete process and steps of the model selection are also provided. Finally, the model selection system of the optimal operation for the pumping stations is achieved, and it can be verified that the method of model selec- tion is feasible and effective.