Optimal design of demand response in load frequency control

Conventionally, the frequency of the power system is controlled by matching the electric supply to the varying demand. Some recent studies demonstrated that demand response (DR) can contribute to the frequency control equally to the generating units. However, to a great extent, the performance depends on the controller design and parameter selection. In this paper, a comprehensive DR control scheme is considered to support frequency control. To obtain the optimal design of the controller, the DR control scheme is formulated as a multi-objective optimization problem and is solved using genetic algorithm (GA). Simulation results show the effectiveness of the proposed method.