This paper investigates load frequency control (LFC) problem of a wind-integrated interconnected power system (IPS) considering the combined effect of time-delay and actuator saturation. The actuator saturation is represented by polytopic approach as well as sector bounding approach. A novel robust $H_{\infty }$ sliding mode control (SMC) scheme is proposed for LFC of time-delay IPS with actuator saturation and wind power integration. A new switching surface function is constructed by incorporating an artificial delay to achieve robust performance. Linear matrix inequality based robust $H_{\infty }$ stabilization criteria are derived considering actuator saturation of the wind integrated time-delay IPS. Then SMC law is designed to satisfy the reaching condition and produce chattering free control signal. At last, the effectiveness of the proposed robust $H_{\infty }$ sliding mode controller is proved by considering an example of two-area wind integrated IPS.

考虑时滞和执行器饱和的综合影响，本文研究了风电互连电力系统（IPS）的负载频率控制（LFC）问题。执行器的饱和度由多目标方法和扇区边界方法表示。新颖而强大$H_{\infty }$针对具有致动器饱和和风能集成的时滞IPS的LFC，提出了一种滑模控制（SMC）方案。通过合并人为延迟来构造新的开关表面功能，以实现稳定的性能。基于线性矩阵不等式的鲁棒性$H_{\infty }$考虑到风集成时滞IPS的执行器饱和，得出了稳定标准。然后设计SMC律以满足到达条件并产生无抖动的控制信号。最后，提出的鲁棒性的有效性$H_{\infty }$ 通过考虑两区域风集成IPS的示例证明了滑模控制器。