摘要
对某火电厂汽轮发电机组发生的有功功率低频振荡事件进行了分析研究,通过广域测量系统(WAMS)记录的振荡波形进行了Prony分析并基于能量函数方法进行扰动源定位分析,认为低频振荡属于强迫振荡,与机组调速系统密切相关。本次低频振荡的原因是发电厂调速系统的逻辑控制参数设计不合理以及汽轮机调门的非线性漂移。为防止该类低频振荡的发生,需要合理设置调速系统参数,加强发电机网源协调管理。
A low frequency oscillation incident caused by inappropriate primal frequency modulation parameters on steam turbine generator units is analyzed and studied. Prony analysis is carried out ac- cording to the low frequency oscillation waves recorded by the wide area measuring system （WAMS）, and disturbance source location is analyzed based on energy function method. It is considered that the low frequency oscillation is a forced oscillation,which is closely related to the speed regulation system of the unit. The cause of the low frequency oscillation incident is found to be the improper steam tur- bine control parameter. To avoid this kind of low steam turbine control system is essential. frequency oscillation, proper parameter setup of the
出处
《湖北电力》
2015年第12期1-3,13,共4页
Hubei Electric Power
关键词
低频振荡
广域测量系统
一次调频
调速系统
强迫振荡
low frequency oscillation
wide area measurement system
primal frequency modulation
speed governing system
forced power oscillation
