摘要
在对远距离输电系统大型汽轮发电机调速中,汽门开度影响发电机的输出功率和转速,从而影响系统的稳定性。利用最优控制理论方法设计出汽门开度最优控制器,通过对汽门开度控制的仿真,研究了控制过程中发电机的输出功率特性、转速特性及其对电力系统的影响。结果表明,汽门开度最优控制对改善电力系统稳定性和抑制低频振荡有着重要作用,可以很大程度地改善系统的动态性能。
In large turbine generator of the speed for long-distance transmission system, Valve opening influence generator power and speed. Thus affect the stability of the system. Using the optimal control theory to design the valve opening the optimal controller. Through to the valve governor control simulation, research the output powerand speed characteristics of generator. The results show that the valve opening optimal control plays an important role to improve power system stability and inhibit low frequency oscillation, greatly improve the dynamic function of the system.
出处
《中国水能及电气化》
2012年第3期45-50,共6页
China Water Power & Electrification
关键词
远距离输电系统
发电机
汽门开度
最优控制
稳定性
long-distance transmission system
generators
valve opening
optimal control
stability
