1100MW核电四极发电机并联环与主引线连接结构温度分布计算  

Temperature Calculation on Connecting Structure between Parallel Rings and Main Leads of 1100MW Nuclear Power 4-pole Generator

作　　者：魏燕飞 王庭山 周一工 胡建波 咸哲龙 梁旭彪 

机构地区：[1]上海电气电站设备有限公司发电机厂,上海200240 [2]上海电气电站设备有限公司,上海201100

出　　处：《大电机技术》2013年第4期7-11,共5页Large Electric Machine and Hydraulic Turbine

基　　金：上海市科技人才计划项目(11XD1420900)

摘　　要：大型汽轮发电机各部件的温升对机组的运行性能有很大影响,同时也是限制发电机容量增加的一个重要原因,在设计过程中对发电机各重要部件的温度分布进行计算,对于保证发电机的安全可靠运行具有重要意义。本文针对4极1100MW级核电发电机并联环与主引线的连接结构,在充分考虑了冷却方式及参数、散热条件、连接接触的影响等因素后,应用通用有限元计算软件ANSYS进行计算分析。文中采用顺序式耦合计算方法对3种不同连接结构分别进行了"电—热"耦合场有限元计算分析,计算结果为连接结构的具体优化设计提供了计算依据。对连接结构件的设计做出适当调整,计算结果表明,调整结构的温升得到了较为明显的改善。The temperature rise of generator components has a great impact on operation performance for large turbine generator, and it is also an important factor for limiting the increase of generator capacity. It is of great importance for generator operation security to calculate the temperature rise of electrical connection components during the design stage. In this paper, the temperature distribution calculation on 3 kinds of connecting structures between parallel rings and main leads of ll00MW nuclear electric power generator is carried out based on FEM software ANSYS, taking account of the cooling methods, parameters, real touching effect, etc. Due to the close relationship between the temperature distribution and the current density distribution of the connecting structure, in this paper a sequential ＂electromagnetic-thermal＂ field coupling calculation method is adopted. The calculation results are significant for guaranteeing safe and reliable operation of generator, and offer a basic analysis to optimize the design of generator.

关 键 词：大型汽轮发电机 并联环 主引线 温度分布 有限元 

分 类 号：TM311[电气工程—电机]