摘要
为了消除电力系统的混沌现象,克服其对大面积电网的不利影响,对电力系统的四维非线性模型进行了复杂动力学特征分析,包括相轨迹图、分岔图、庞加莱映射图,这些特征加深了对其混沌振荡的认识.为了保证系统控制的鲁棒性,设计了滑模变结构控制器,并用Lyapunov稳定理论证明了系统的稳定性,将混沌振荡系统控制到稳定的系统.用Matlab模拟验证其有效性,结果证明该方法能够有效抑制电力系统的混沌现象.
In order to eliminate the bifurcation and chaos phenomenon in power system and overcome the adverse impact on a large area of the grid, the chaotic complex dynamic characteristics of the four - dimensional nonlinear equations of power system were analyzed in this paper, including the space trajectory, the Lyapunov exponent and the Poincare map. These characteristics enable us to know them deeply. To ensure the robustness of the system control, the author stabilized the chaotic orbits to arbitrary chosen fixed points and periodic orbits by means of sliding mode control, and the Lyapunov theory is used to prove the stability of the system. The simulation result by MATLAB shows the effectiveness of this kind of control system.
出处
《绵阳师范学院学报》
2013年第2期38-44,共7页
Journal of Mianyang Teachers＇ College
基金
国家级大学生创新实验项目(1210712078)
关键词
混沌
电力系统
滑模变结构
Chaos
power system
sliding mode control （SMC）
