In this paper, the cascaded control scheme is introduced for the first time to the rotor stability problem. Cascaded excitation and governing control schemes are introduced to damp rotor oscillations. PID cascaded control is used for its popularity and effectiveness. These controllers will be fine-tuned using a novel metaheuristic optimization technique, namely the Marine Predator Algorithm; which mimics the movement of marine predators when foraging. This technique is popular for always converging to a constant stable point. Our study will be performed on two systems, the simple single machine to infinite bus power system and the popular IEEE-39 bus system to study both local and global oscillations, respectively. Results show the effectiveness of the new proposed cascaded control scheme compared to the conventional scheme in improving the damping of the rotor oscillations without the need of a power system stabilizer. Results are provided as time domain simulation via MATLAB/SIMULINK.

本文首次将级联控制方案引入转子稳定性问题。级联励磁和调节控制方案被引入以抑制转子振荡。PID 级联控制因其普及性和有效性而被使用。这些控制器将使用一种新颖的元启发式优化技术进行微调，即海洋捕食者算法；它模仿海洋捕食者觅食时的运动。这种技术很受欢迎，因为它总是收敛到一个恒定的稳定点。我们的研究将在两个系统上进行，简单的单机到无限总线电源系统和流行的 IEEE-39 总线系统分别研究局部和全局振荡。结果表明，与传统方案相比，新提出的级联控制方案在无需电力系统稳定器的情况下改善转子振荡阻尼方面的有效性。结果通过 MATLAB/SIMULINK 作为时域仿真提供。