远距离输电系统大型发电机汽门开度最优控制  

The Optimal Control of Large Generator Valve Opening in Long-distance Transmission System

作　　者：周安锋[1] 刘志泽 

机构地区：[1]长沙理工大学电气与信息工程学院,湖南长沙410076 [2]张家界市电业局,湖南张家界427000

出　　处：《中国水能及电气化》2012年第3期45-50,共6页China Water Power & Electrification

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.

关 键 词：远距离输电系统 发电机 汽门开度 最优控制 稳定性 

分 类 号：TM301.2[电气工程—电机]