Abstract
In highly penetrated wind power systems, similar to conventional units, wind farms must contribute to the frequency control task. This paper develops a model for load-frequency control (LFC) considering the participation of wind farms. Some well-known nonlinear physical constraints, i.e., time delay, generation rate constraint (GRC), and governor dead-band (GDB), which lead the system toward instability, are considered in the obtained model. Based on the obtained model, some control strategies are suggested to realize the participation of wind farms in the LFC task. First, the Mamdani fuzzy control approach is applied to improve the frequency behaviour of the power system in case of disturbance occurrence. However, this controller is unable to perform well against the aforementioned physical constraints. To solve this issue, a smart fuzzy controller is finally proposed to obtain maximum functionality against involved nonlinear constraints. To show the superiority of designed compensators, some simulations are carried out in the MATLAB/SIMULINK software to compare the performance of the suggested controller. Studies confirm the efficiency and high accuracy of proposed algorithms.
Published Version
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