超导储能装置的非线性鲁棒控制器设计

首先讨论了超导储能装置（SMES）建模问题，根据SMES样机实验结果，构造了SMES的二阶鲁棒模型；然后在单机无穷大系统中，得到了含SMES的电力系统非线性鲁棒模型。进一步，基于反馈线性化方法将系统线性化，再利用线性H_∞理论求得SMES的鲁棒控制规律。最后，用数字仿真检验控制规律的有效性。结果表明在各种工况下，SMES的非线性鲁棒控制器均可使系统在受到大干扰后迅速恢复正常运行，并显著提高系统的暂态稳定极限，从而提高系统的输电能力。

NONLINEAR ROBUST CONTROL DESIGN FOR POWER SYSTEM INCLUDING SUPERCONDUCTING MAGNETIC ENERGY STORAGE DEVICES

Recently the development of power electronics and superconducting technology m ade it possible that superconducting m agnetic energy storage SMES took part in the power system as FACTS devices to enhance transient stability. In this paper,a second order robust m odel of SMES is established first according to the experim ental results of SMES prototype. Then the nonlinear robust model of the single- m achine infinite- bus power system including SMES is obtained.Furthermore,the paper presents a procedure to obtain the nonlinear robust control law of SMES based on feedback linearization theory. The simulation results illustrate that the nonlinear robust controller can restore the system after large disturbance rapidly and improve the transient stability lim its of the system,thus increasing the capacity of transm itting power.