摘要
针对电力系统具有非线性负荷的情况下 ,在经典的非线性系统几何结构理论的发展基础上 ,结合非线性系统微分几何理论 ,提出了关于微分代数系统的 M导数、M括号等一些新的概念和定义 ,并详细推导了微分代数系统的完全精确线性化设计。然后将其应用于具有非线性负荷的电力系统静止无功补偿器的控制 ,得到了非线性控制规律。仿真结果表明 ,所设计的静止无功补偿器非线性控制器与常规 PID控制相比 ,具有较好的阻尼特性和电压维持能力 ,同时 ,由于该设计计及了负荷的变化 ,从而更接近于实际情况。
The paper describes an exact linearization technique for multi input power systems with nonlinear loads. The nonlinear differential algebraic systems (NDAS) considered are not in general state variable form. The definitions of M derivative and M bracket similar to the definitions in classic differential geometric theory and some related revised results are given. M derivative and M bracket are used to obtain the feedback control law for the NDAS. The approach is used to design a nonlinear controller of SVC in single machine infinite system with nonlinear loads. The simulation result shows that the nonlinear controller of SVC has better ability to improve the damping and voltage level than the conventional PID controller. Furthermore, the control law is even superior when the nonlinear loads vary.
出处
《电力系统自动化》
EI
CSCD
北大核心
2002年第17期12-15,共4页
Automation of Electric Power Systems
基金
国家重点基础研究专项经费资助项目 (G19980 2 0 30 0 )
