摘要：A Sliding Mode Controller (SMC) is adopted in this work with a Proportional Integral
Derivative (PID) to achieve robust control signal and employ it instead of Power System
Stabilizer (PSS). The major technique is basically focusing on the control accuracy. The main
proposal is that the effective property of PID and high characteristics of SMC are combined to
eliminate the chattering effect of SMC in order to generate best control signal to the excitation
system. Speed deviation is chosen as sliding variables. The robust design of SMC-PID has been
employed to enhance the power system stability and further to damp out strongly the system
oscillations that caused by the disturbances. In order to validate the robustness of the mentioned
scheme, the proposed proposition is evaluated on Single Machine Infinite Bus (SMIB) power
system under different perturbations with pre-specified operating condition. For comparison, the
tested power system is carried separately through different designed controllers. The simulation
results have demonstrated the high performance of mentioned controller that attained best
results compared to various controllers.
关键词：PID; Power system stability; PSS; SMC; SMIB power system.
