摘要
采用线性定常二次型全局最优控制理论对电力系统扰动下大型汽轮发电机组轴系产生的扭振进行主动控制,较详细地阐述了三相短路和两相短路的故障原因,讨论了两种故障对最大电磁转矩的影响,计算了发电机组轴系产生的冲击转矩和扭振响应,并利用线性定常二次型全局最优控制理论对这两种故障进行扭振主动控制仿真计算。计算结果证明:采用扭振主动控制技术能有效抑制由于电力系统扰动而引起的大型汽轮发电机组轴系扭振。
In this paper, a new idea of active control for torsional vibration that is global optimum control of linear constant quadratic form is applied in attenuate torsional vibration caused by electric system's disturbances. Electric system faults (such as 3-phase short circuits, 2-phase short circuits) are described, and the effect of faults on the maximum electric-magnetic torque is discussed. The impulse torque and response of torsional vibration of turbo-generator shafts are computed, and a simulation calculation on the basis of the global optimum control theory of linear constant quadratic form is conducted. The results of simulation show that active, control is very effective in attenuating torsional vibration of large turbo-generator shafts caused by disturbances.
出处
《动力工程》
EI
CSCD
北大核心
2005年第2期169-173,共5页
Power Engineering
关键词
动力机械工程
汽轮发电机
扭振
主动控制
扰动
power and mechanical engineering
turbo-generator
torsional vibration
active control
disturbance
