蒸发冷却汽轮发电机负序能力的改进计算  

Improving calculating of the negative sequence capability of the evaporative cooling turbo generator

作　　者：温志伟[1] 顾国彪[1] 

机构地区：[1]中国科学院电工研究所,北京100080

出　　处：《电工电能新技术》2004年第4期34-37,共4页Advanced Technology of Electrical Engineering and Energy

摘　　要：本文对50MW蒸发冷却汽轮发电机的暂态负序能力进行了计算分析,建立了采用二维有限元法的电磁场及温度场的计算数学模型,验算了该电机的最大暂态负序能力,对转子表面温度的计算与以往的计算结果及运行试验数据进行了比较。本文的分析结论可以为电机通风系统设计和电机运行部门的温度监测提供可靠的理论依据。The transient negative sequence capability of a 50MW evaporative cooling turbo-generator is studied, and a new mathematical model calculating the transient electromagnetic field and the transient temperature field in the rotor of evaporative cooling turbo-generator by means of two dimension finite element method is developed. The maximal negative sequence capability of the 50MW evaporative cooling turbo-generator has been checked. The calculated temperatures on the surface of rotor are compared with former calculating data and the experimental results in operation. The position of the maximum temperature rise in the rotor has been determined. The conclusion of the paper will provide dependable theoretical evidences for the design of cooling system and temperature inspection at field of generator operation.

关 键 词：蒸发冷却 汽轮发电机 负序 二维有限元法 

分 类 号：TM301.41[电气工程—电机]