基于分级策略的演化算法

出口越南的某卧式水轮发电机组，其单机容量为额定功率6 750 kW,额定转速1 000 r/min.针对其单机容量、转速高等特点，在简要介绍转子部件结构特征的基础上，重点通过对机组额定与飞逸工况下，发电机转子横截面结构应力分析的实例，介绍了Pro/E模型的导入以及有限元分析方法，最后对计算结果进行分析总结.分析过程中实现了Pro/E建模和ANSYS的仿真相互集成，通过软件各自的优势完成了模型建立和有限元分析.分析结果表明，主轴及磁极的结构达到了设计要求，与传统计算方法相比，其精度更能满足工程要求，且效率高.

Evolutionary Algorithm Based on Hierarchical Strategy

The unit single capactity of the horizontal hydraulic turbine-generator unit exported to Vietnam has the rated power of 6 750 kW and rated speed of 1 000 r/min, which has the characteristic of large unit single capacity and high rotation speed, etc.After briefly introducing the structure characteristics of the rotor part, the methods of establishing Pro/E model and analyzing finite element were presented through the example of stress analysis of generator rotor cross section under condition of rated and runaway speed, and the computed results were analyzed and summarized. In the analysis process, the Pro/E modeling integrated with ANSYS simulation was realized, model establishment and finite element analysis were finished by the software. The results show that the structures of main shaft and magnetic poles reach the design requirements. Compared with the traditional calculation method, its precision can better satisfy the engineering demand, and the efficiency is highed.