摘要
大型汽轮发电机在出现全厂送出线路全跳,功率突降的工况下不跳闸,会造成汽轮发电机低频和过频危害。对一例典型工况下的汽轮发电机甩负荷而不跳闸进行分析,重新整定发电机频率保护并加入主变功率突降保护,完善汽轮发电机的保护机制。
Large steam turbine generators do not trip when the whole plant’s transmission line is completely tripped and the power drops suddenly,which will cause the low frequency and overfrequency hazards of the steam turbine generator.Analyze a case of turbo-generator load rejection without tripping under typical working conditions,re-adjust the generator frequency protection and add the main transformer power droop protection to improve the protection mechanism of the turbo-generator.
作者
李召祥
LI Zhao-xiang(Guangdong Yuedian Jinghai Power Generation Co.,Ltd.,Jieyang 515223,China)
出处
《江西电力职业技术学院学报》
CAS
2021年第6期13-15,共3页
Journal of Jiangxi Vocational and Technical College of Electricity
关键词
发电机
超速
频率
功率突降
Generator
Overspeed
Frequency
Sudden Drop in Power
