摘要
讨论大型汽轮发电机应具有的频率异常运行能力。文中讨论了系统可能的频率变化范围和机组频率异常运行的限制因素,特别是汽轮机叶片的谐振问题。列举了世界各国生产的大机组频率异常运行允许时间。在此基础上提出对新订购大机组频率异常运行能力的要求。
The abnormal frequency operation capability of large turbo-generator is reviewed.The probable range of frequency variation of power system and the limit factor of abnormal frequency operation of generator set,espe-cially the frequency resonance of the turbine blades,are described in this paper.The allowable duration of abnor-mal frequency operation for large turbo-generator sets provided by the main manufactories on the world is listed.The requirements of abnormal frequency operation capability for purchasing new large turbo-generator sets are pro-posed based on the above discussions.
出处
《中国电力》
CSCD
北大核心
2001年第12期32-36,共5页
Electric Power
关键词
汽轮发电机
频率异常
叶片
频率谱振
低频减负荷
大型发电机
turbo-generator
frequency abnormity
turbine blade
frequency resonance
under frequency load shedding
