电网混沌系统的T-S模糊非线性PI控制

摘要

The bifurcation and chaos phenomenon in power grid are the threats to the stable operation of power grid and the safety of person and equipments. In order to restrain the chaos phenomena in power grid, a kind of nonlinear state PI control method is put forward based on T-S fuzzy model. The second-order T-S fuzzy model of power grid is established to divide the nonlinear system into Local linear subsystems. And nonlinear state PI controller is designed on the basis of subsystems. The simulation result shows the effectiveness of this kind of control system.%为抑制电网的混沌现象,提出了一种电网混沌系统的T-S模糊模型的非线性状态比例-积分(PI)控制方法.通过建立电网混沌系统的T-S模糊模型,将具有强非线性的电力系统分解为局部线性化的子系统,针对每一个子系统设计非线性状态比例-积分控制器,理论论证了控制系统的稳定性.最后由仿真实验证实了该方法能够有效抑制电网的混沌现象.