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The strong inspiration for raise of renewable energy in power system, mainly at the demand side, results in novel changes in frequency and voltage regulation. In power system operation, wide area monitoring applications will focus heavily on Demand Response (DR), particularly in the smart grid area, where two-way communication and consumer sharing are involved. Load Frequency Control (LFC) model plays a significant role in electric power system design and operation. This paper presents an idea of incorporating a DR loop in conventional LFC known as LFC-DR, for a singlearea power system using Intelligent Controller. In the controller design DR communication delay latency is considered which linearized using Pade approximation. The DR control loop in LFC improves stability of the overall closed-loop system, efficiently increases the dynamic performance of the system. The simulation results show that the LQR controller based proposed power system model (LFC-DR) for single-area gives better performance than the traditional controller under any operating scenarios.

Lqr Based Load Frequency Control By Introducing Demand Response