摘要
运用开关函数法对静止同步补偿器(STATCOM)进行数学建模,提出其无功电流的比例积分(PI)控制和基于微分几何的非线性控制方法,讨论非线性控制方法中零动态稳定性问题。用Matlab对2种控制方法进行了仿真分析,结果表明:非线性控制下无功电流的响应速度明显快于PI控制,且在参考输入电流方向发生改变时,非线性控制的过渡更为平稳。
A transient mathematic model of STATCOM （STATic synchronous COMpensator） is pre-sented based on switching function and two control strategies of reactive current are proposed： the proportional integral control and nonlinear control based on theory of differential geometry. The stability of zero dynamics of nonlinear control strategy is discussed. The two control methods are simulated with Matlab. Results show that the response speed of nonlinear control is faster than that of PI control and the transition performance of nonlinear control is more stable than that of PI control when the direction of referenced input current changes.
出处
《电力自动化设备》
EI
CSCD
北大核心
2006年第1期21-24,共4页
Electric Power Automation Equipment
基金
江苏省高新技术项目(BG2004024)
江苏大学自然科学创新基金(04CX02)~~
关键词
静止同步补偿器
数学模型
比例积分控制
微分几何
零动态
STATCOM
mathematic model
proportional integral controller
differential geometry
zero dynamics
