【摘要】 研究了含有参数不确定性及外部扰动的TCSC(thyristor controlled series compensation)单机无穷大母线系统的鲁棒H∞控制问题,使用自适应backstepping方法及Lyapunov方法构造出系统的存贮函数,同时设计出鲁棒H∞控制器及参数替换律.在内部扰动中同时考虑了阻尼系数不易精确测量和发电机电势不可直接测量的影响.该控制器不仅保留系统的非线性特性和对未知参数的实时在线估计,而且能够有效抑制干扰对系统输出的影响.仿真结果表明,所设计的控制器能够快速抑制振荡,保证单机无穷大系统的暂态稳定.更多还原

【Abstract】 The robust H∞ control problem is studied for the single machine-infinite bus TCSC(thyristor controlled series compensation) power system with parameter uncertainties and external disturbances.With the storage functions formed in control system by adaptive backstepping and Lyapunov methods,the robust H∞ controller and parameter updating law are obtained simultaneously.Both the effects of damping coefficients and direct unmeasurability of generator potential are considered in internal disturbance.The proposed controller will not only keep the nonlinearity of power system and the on-line real-time estimate of unknown parameters,but also suppress efficiently the influence of disturbance on system output.Simulation results reveal that the proposed controller can suppress oscillation rapidly to provide transient stability for the single machine-infinite bus TCSC power system.更多还原