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将非线性鲁棒控制方法用于先进的静止无功发生器 ( ASVG)的控制。基于电力系统动态、耗散系统理论框架和非线性 L2 增益干扰抑制方法 ,建立了单机无穷大系统中的 ASVG鲁棒控制数学模型。模型中考虑了来自发电机转子轴上的机械功率扰动和 ASVG输出电压的扰动。并在此基础上 ,采取递推设计方法构造能量存储函数 ,以避免求解 Hamilton- Jacobi- Issacs不等式 ,从而得到ASVG的非线性 L2 增益干扰抑制控制规律。单机无穷大系统的仿真结果证明 ,与传统 PID+PSS控制方式相比 ,在此控制规律下 ,ASVG能够更有效地阻尼系统振荡 ,提高系统暂态稳定性能。
The nonlinear robust control method is used for the control of an advanced static var generator (ASVG). Based on the theories of power system dynamics, dissipative system and non-linear L2 gain interference suppression, a mathematic model of ASVG robust control in single-machine infinite system is established. The model takes into account perturbations in the mechanical power from the generator rotor shaft and the ASVG output voltage. Based on this, the recursive design method is used to construct the energy storage function to avoid solving the Hamilton-Jacobi- Issacs inequality, so as to obtain the non-linear L2 gain interference suppression control law of ASVG. The simulation results of a single-machine infinite system prove that compared with the traditional PID + PSS control method, under the control law, ASVG can more effectively dampen the system oscillation and improve the transient stability of the system.